7x 1 )-( 6x 3 )= 5 July 8, 2019 16 32 64 128 2 1 6x )+ 2 3 6x )= 7x 5x 3 7x 2 5y 1 6x 4 8y 7x 9 6x 3 5x 1 7x 14 5 6x 3 1