Question

Resolve
{3x-y=1
{2x+y=4

Answer 1

Resposta:  x=1, y=2

Explicação passo a passo:

$\begin{bmatrix}3x-y=1\\ 2x+y=4\end{bmatrix}=\begin{bmatrix}2\cdot \frac{1+y}{3}+y=4\end{bmatrix}=\begin{bmatrix}\frac{2+5y}{3}=4\end{bmatrix}=x=\frac{1+2}{3}=x=1\\\\\\sesposta \\x=1, y=2$