2 6y 5 3 2y 4 July 8, 2019 16 32 64 128 6y 2 5 y 47 2y 3 3y 1 2y 3 4 y 2 2 6y 5 4 2 + 3 + 4 + 5 + 6 2 6-2y 5 2 5(4-3y)-y+2 3
