Question

resolva as equação do 1° grau em R
4(6y+7)=15y-8
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Answer 1

$\large\boxed{\begin{array}{l}\sf Resolva\,a\,equac_{\!\!,}\tilde ao\,de\,1^o\,grau\,em\,\mathbb{R}\\\sf 4(6y+7)=15y-8\\\underline{\sf soluc_{\!\!,}\tilde ao}\\\rm 4(6y+7 )=15y-8\\\rm 24y+28=15y-8\\\rm 24y-15y=-8-28\\\rm-9y=-36\bullet(-1)\\\rm 9y=36\\\rm y=\dfrac{36}{9}\\\\\rm y=4\\\rm S=\{4\}\end{array}}$