Question

4x - y = -4
5x - y = 1

Answer 1

Resposta:

x=5 e y=24

Explicação passo-a-passo:

Crie um sistema

$\left \{ {{5x-y=1\\} \atop {4x-y=-4\\}(.-1)}\\\\\\\\\ \\ \\\{ {{5x-y=1 \atop {-4x+y=4}} \right. +\\\\ x=5 \\ 5.5-y=1\\ 25-y=1\\ -y=1-25\\ -y=-24(.-1)\\ y=24$