How do you solve this equation using substitution:

3x-2y=12

x+2y=4

Solve by Substitution x + y=5, 3x+2y=12. x + y=5 x + y = 5, 3 x+2y=12 3 x + 2 y = 12. Since y y does not contain the variable to solve for, move it to the right side of the equation by subtracting y y from both sides. x = - y+5 x = - y + 5. 3 x+2y=12 3 x + 2 y = 12.