Question

Solve the system of equations 2 + 2y = -20 and x + 3y = -27 by combining the
equations.

Answer 1

no estoy segura como se debe responder

1 (x + 2y = -20) ----> x*2y= -20

-1 (x + 3y = -27) ----> x-3y= 27

(0) x + (-1) y = 7