3y 7 3 y 1 )= 2 2y 6 July 8, 2019 16 32 64 128 3x + 2y = 6 3 2(1 - 2y) = 0 7(3y - 1 5) 3) (2 - 7y)/6 + (4y + 7)/3 = - y/2