3y 9 2y 5 6y 4y 7 July 8, 2019 16 32 64 128 6xy - 4y + 6 - 9x 9 3y-5 7y=16 2 3) 5y + 9y 4) 6y - y 9 - 7y =2 5-3y 9y + 4 - 6y