\nEnunciado<\/b><\/span><\/p>\n
Considera o sistema de equa\u00e7\u00f5es escrito no caderno da Joana.<\/p>\n
$\"\"$ <\/a><\/p>\n
\n
Resolve uma das equa\u00e7\u00f5es em ordem a uma das inc\u00f3gnitas.
Escolhe bem a equa\u00e7\u00e3o por onde queres come\u00e7ar de modo a facilitar os c\u00e1lculos.<\/li>\n
Substitui, na outra equa\u00e7\u00e3o, essa inc\u00f3gnita pela express\u00e3o obtida.<\/li>\n
Resolve a equa\u00e7\u00e3o que ficou s\u00f3 com uma inc\u00f3gnita.
Que valor obtiveste?<\/li>\n
Substitui o valor encontrado na primeira equa\u00e7\u00e3o.<\/li>\n
Escreve o par ordenado que \u00e9 solu\u00e7\u00e3o do sistema.<\/li>\n
Verifica graficamente se a solu\u00e7\u00e3o obtida est\u00e1 correta.<\/li>\n<\/ol>\n
Resolu\u00e7\u00e3o >><\/a><\/span><\/div><\/div>\n\n
\nResolu\u00e7\u00e3o<\/b><\/span><\/p>\n
\n
Considera o sistema de equa\u00e7\u00f5es escrito no caderno da Joana.<\/p>\n<\/blockquote>\n
$\"\"$ <\/a><\/p>\n
\n
Resolve uma das equa\u00e7\u00f5es em ordem a uma das inc\u00f3gnitas.
Escolhe bem a equa\u00e7\u00e3o por onde queres come\u00e7ar de modo a facilitar os c\u00e1lculos.<\/li>\n
Substitui, na outra equa\u00e7\u00e3o, essa inc\u00f3gnita pela express\u00e3o obtida.<\/li>\n
Resolve a equa\u00e7\u00e3o que ficou s\u00f3 com uma inc\u00f3gnita.
Que valor obtiveste?<\/li>\n
Substitui o valor encontrado na primeira equa\u00e7\u00e3o.<\/li>\n
Escreve o par ordenado que \u00e9 solu\u00e7\u00e3o do sistema.<\/li>\n
Verifica graficamente se a solu\u00e7\u00e3o obtida est\u00e1 correta.<\/li>\n<\/ol>\n
\u00a0<\/p>\n\n\n\n\n\n\n\n\n\n\n
Ponto<\/strong><\/td>\n 1.\u00aa equa\u00e7\u00e3o<\/strong><\/td>\n 2.\u00aa equa\u00e7\u00e3o<\/strong><\/td>\n<\/tr>\n
\$ – 2x + y = – 1\$<\/strong><\/td>\n \$ – x + 2y = 4\$<\/strong><\/td>\n<\/tr>\n
1.<\/td>\n \$\\begin{array}{*{20}{c}}{ – 2x + y = – 1}& \\Leftrightarrow &{y = 2x – 1}\\end{array}\$<\/td>\n \u00a0<\/td>\n<\/tr>\n
2.<\/td>\n \u00a0<\/td>\n \$ – x + 2\\left( {2x – 1} \\right) = 4\$<\/td>\n<\/tr>\n
3.<\/td>\n \u00a0<\/td>\n \$\\begin{array}{*{20}{l}}{ – x + 2\\left( {2x – 1} \\right) = 4}& \\Leftrightarrow &{ – x + 4x – 2 = 4}\\\\{}& \\Leftrightarrow &{3x = 6}\\\\{}& \\Leftrightarrow &{x = 2}\\end{array}\$<\/td>\n<\/tr>\n
4.<\/td>\n \$\\begin{array}{*{20}{c}}{y = 2 \\times 2 – 1}& \\Leftrightarrow &{y = 3}\\end{array}\$<\/td>\n \u00a0<\/td>\n<\/tr>\n
5.<\/td>\n \$\\left( {2,3} \\right)\$<\/td>\n<\/tr>\n
6.<\/td>\n $\"\"$ <\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<< Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"
Enunciado Resolu\u00e7\u00e3o Enunciado Considera o sistema de equa\u00e7\u00f5es escrito no caderno da Joana. Resolve uma das equa\u00e7\u00f5es em ordem a uma das inc\u00f3gnitas.Escolhe bem a equa\u00e7\u00e3o por onde queres come\u00e7ar de modo a facilitar...<\/p>\n","protected":false},"author":1,"featured_media":25822,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[100,97,714],"tags":[424,345,344,239],"series":[],"class_list":["post-25820","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-8--ano","category-aplicando","category-equacoes-literais-e-sistemas","tag-8-o-ano","tag-funcao-afim","tag-grafico","tag-sistema-de-equacoes"],"views":86,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2023\/05\/8_Pag199-T10_520x245.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/25820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25820"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/25820\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/25822"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25820"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=25820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

Ponto<\/strong><\/td>\n	1.\u00aa equa\u00e7\u00e3o<\/strong><\/td>\n	2.\u00aa equa\u00e7\u00e3o<\/strong><\/td>\n<\/tr>\n
\\( – 2x + y = – 1\\)<\/strong><\/td>\n	\\( – x + 2y = 4\\)<\/strong><\/td>\n<\/tr>\n
1.<\/td>\n	\\(\\begin{array}{*{20}{c}}{ – 2x + y = – 1}& \\Leftrightarrow &{y = 2x – 1}\\end{array}\\)<\/td>\n	\u00a0<\/td>\n<\/tr>\n
2.<\/td>\n	\u00a0<\/td>\n	\\( – x + 2\\left( {2x – 1} \\right) = 4\\)<\/td>\n<\/tr>\n
3.<\/td>\n	\u00a0<\/td>\n	\\(\\begin{array}{*{20}{l}}{ – x + 2\\left( {2x – 1} \\right) = 4}& \\Leftrightarrow &{ – x + 4x – 2 = 4}\\\\{}& \\Leftrightarrow &{3x = 6}\\\\{}& \\Leftrightarrow &{x = 2}\\end{array}\\)<\/td>\n<\/tr>\n
4.<\/td>\n	\\(\\begin{array}{*{20}{c}}{y = 2 \\times 2 – 1}& \\Leftrightarrow &{y = 3}\\end{array}\\)<\/td>\n	\u00a0<\/td>\n<\/tr>\n
5.<\/td>\n	\\(\\left( {2,3} \\right)\\)<\/td>\n<\/tr>\n
6.<\/td>\n	$\"\"$ <\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n << Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":" Enunciado Resolu\u00e7\u00e3o Enunciado Considera o sistema de equa\u00e7\u00f5es escrito no caderno da Joana. Resolve uma das equa\u00e7\u00f5es em ordem a uma das inc\u00f3gnitas.Escolhe bem a equa\u00e7\u00e3o por onde queres come\u00e7ar de modo a facilitar...<\/p>\n","protected":false},"author":1,"featured_media":25822,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[100,97,714],"tags":[424,345,344,239],"series":[],"class_list":["post-25820","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-8--ano","category-aplicando","category-equacoes-literais-e-sistemas","tag-8-o-ano","tag-funcao-afim","tag-grafico","tag-sistema-de-equacoes"],"views":86,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2023\/05\/8_Pag199-T10_520x245.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/25820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25820"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/25820\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/25822"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25820"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=25820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}