Question

Por método de sustitución:
5x + 7y = -1
-3y + 4y = -24

Answer 1

Respuesta:

$(x,y) (\frac{167}{5},-24)$

Explicación paso a paso:

$\left \{ {{5x+7y=-1} \atop {-3y+4y=-24}} \right. \\\\\left \{ {{5x+7y=-1} \atop {y=-24}} \right.\\\\y=-24\\5x+7(-24)=-1\\\\5x-168=-1\\5x=-1+168\\5x=167\\\\x=\frac{167}{5} \\\\(x,y)(\frac{167}{5},-24)$