Find the solution of this system of equations

-2x-2y=-12

4x-7y=-15

-2x-2y=-12

4x-7y=-15

Solve for x in the first equation

-2x=-12+2y

2x=12-2y

x=6-y

Plug x into the second equation

4 (6-y) - 7y=-15

24-4y-7y=-15

24-11y=-15

11y=39

y=3.54

Plug that into the eqaution for x

x=6-3.54

x=2.46