Respuesta :

Answer:

Step-by-step explanation:

7x-8y=-12

4x(-4x+2y)=3x4

7x-8y

        =-9

-4x+2y

7x-8y=-12

-16x+8y=12

-9x=0

x=0

0-8y=-12

y=12/8=3/2=1.5