y = 3x - 2
y = 7x + 2
Set each equation equal to each other
3x - 2 = 7x + 2
Add 2 to both sides
3x = 7x + 4
Add 3x on both sides and subtract 4 on both sides
4x = -4
divide both sides by 4
x = -1
Substitute x into equation 1 and solve for y
y = 3(-1) - 2
y = -5
done...