Question

me dêem exercícios de equação do 7° ano
exemplo:
2y(4+5)=12y-13​

Answer 1

$\large\bm{2y\left(4 + 5\right) = 12y - 13} \\ \large\bm{2y \times 9 = 12y - 13} \\\large\bm{18y = 12y - 13} \\\large\bm{18y - 12y = - 13} \\\large\bm{6y = - 13} \\ \\ \large\bm{y = - \dfrac{13}{6} } \\ \\ \bm{\large\boxed{\boxed{  { \large \bm{ y = - \dfrac{13}{6} }}}}}$

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