8y=28-4x

6x+8y=6

find the solution to the system of equations

first equation equivalent to

4x+8y=28

substract with second equation

-2x=22

divide with - 2

x=-11

substitute to first equation

8y=28-4 (-11)

8y=72

divide with 8

y=9

so the solution is (-11,9)