Question

A expressao
-3x+y=5
2x-3y=-8

Answer 1

$\Large\mathsf\displaystyle{}\begin{cases} - 3x + y = 5 \\ 2x - 3y = - 8\end{cases} \\\\ \Large\mathsf\displaystyle{}\begin{cases}y = 5 + 3x \\ 2x - 3y = - 8\end{cases} \\\\ \Large\mathsf\displaystyle{}2x - 3\left(5 + 3x\right) = - 8 \\\Large\mathsf\displaystyle{}x = - 1 \\\\ \Large\mathsf\displaystyle{}y = 5 + 3\cdot\left( - 1\right) \\ \Large\mathsf\displaystyle{}y = 2$

Solução:

$\Large\displaystyle\text{ \begin{gathered} \underline{\boxed{\boldsymbol{\left(x,y\right) = \left( - 1,2\right) }}}\end{gathered} }$

$\displaystyle\text{ \begin{gathered} \underline{\boxed{\boldsymbol{{ \red{Bons}} \blue{\:Estudos}}}}\end{gathered} }$