eliminate the y terms
multiply -6x-7y=-10 by 2 and add to other equaiation
8x+14y=4
-12x-14y=-20+
-4x+0y=-16
-4x=-16
divide both sides by -4
x=4
sub back
-6x-7y=-10
-6(4)-7y=-10
-24-7y=-10
add 24 o both sides
-7y=14
divide both sides by -7
y=-2
x=4
y=-2
(4,-2)