Question

{x - 3y = 8}
{x + 2y =13}

Answer 1

Explicación paso a paso:

$x - 3y = 8 \\ x = 8 + 3y \\ x + 2y = 13 \\ (8 + 3y) + 2y = 13 \\ 8 + 5y = 13 \\ 5y = 13 - 8 \\ 5y = 5 \\ y = \frac{5}{5} = 1$

$x = 8 + 3y \\ x = 8 + 3(1) \\ x = 11$

11-3(1)=8✓

11+2*1=13✓

espero te sirva