5 12 7 9y 10 5 12 3y July 8, 2019 16 32 64 128 5) (7y - 5)/(12y) - (10y - 19)/(12y) + (10 - 15y)/(12y) 3) 13(7 - 5y) = 5(3 - 12y) 4) 9(3y + 1) = 5(2y + 12) 5 + (7y - 12)/3 = y + 13
