Question

Срочно ! помогите!!!!!!!!!!!!

Answer 1

8. х=-7, у=1
9. х=-0,8, у=-3,6

Answer 2

$- 4x + 9y + = 37 \ + \ 4x + y = - 27 \ = 10y + 10$

(10;10)

$3x + 4y = - 24 \ + \ - 3x - y = 6 = 3y - 18$

(3;-18)