1 4 9 10y − 3 5y 7 8 July 8, 2019 16 32 64 128 1 4 9 10y 3 5y 7 8 1 4 9 10y 3 5y 7 8 simplified 3) 1 1y + 0 9y+4=4+0 2y 4y+7y+1 8=9 5
