7 3y 5 ) 2 4y 3 July 8, 2019 16 32 64 128 7 3y 5 )+ 2 4y 3 2y 5 )/ 7 3y 10 )/ 2 4y 8 )/ 7 3 7 + 4(3 - y) = 5(y + 2) 3 - 7y 5y - 3