Question

{8y-7x=-5,6 35x+2y=7

Answer 1

$40y - 35x = - 28 : \ 35x + 2y = 7 \ 42y = - 21 \ y = - 0.5 \ - 4 - 7x = - 5.6 \ 7x = 1.6 \ x = frac{1.6}{7}$