15x - 3y = 24
15x - 3y-15x = 24-15x
-3y= 24-15x
-3y/-3= 24/-3-15x/-3
y=-8+5x
- 5x + 4y = - 32
- 5x + 4(-8+5x) = - 32
- 5x + 4(-8) (4)(+5x) = - 32
-5x-32+20x=-32
-32+15x=-32
-32+15x+32=-32+32
15x=0
15x/15=0/15
x=0
y=-8+5x
y=-8+5(0)
y=-8