5 4y 1 7 3y 2 July 8, 2019 16 32 64 128 3y 5 )( 2y 7 )( 4y 1 5 4(3y - 2) - 7 2(2y - 3) = 1 2 4 + (7y - 3)/5 (3y + 5)/4 - (3y)/2 4) 4 + (7y - 3)/5 (3y + 5)/4 - (3y)/2 4) 5 = 5y 1 1/4 * y + 7