3x + 4y = -2

x-6y = -8

3 x -6 + 4 x 1 = -2

-2 - 6 x 1 = -8

2 answers

the answer -2,1
x = 6y - 8

3x + 4y = -2

3(6y - 8) + 4y = -2

Solve last equation for y. Insert into first equation to find x. Put both into the second equation to check.