Question

resolva essa equação de primeiro grau

x+y=-6
-3x+2y=1​

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\begin{cases}\mathsf{x + y = -6}\\\mathsf{-3x + 2y= 1}\end{cases}$

$\mathsf{x = -6 - y}$

$\mathsf{-3(-6-y) + 2y = 1}$

$\mathsf{18 + 3y + 2y = 1}$

$\mathsf{5y = -17}$

$\boxed{\boxed{\mathsf{y = -\dfrac{17}{5}}}}$

$\mathsf{x = -6 + \dfrac{17}{5}}$

$\mathsf{x = \dfrac{-30 + 17}{3}}$

$\boxed{\boxed{\mathsf{x = -\dfrac{13}{5}}}}$