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