4 y 3 )= 3y 12 July 8, 2019 16 32 64 128 3y 1 4 3 y 1 12 4 x minus 3 y equals 124x − 3y 12 12 y 2 )= 3 3y 4 4 y-3 =12-3 x 4 + 4 = 12