7 2x 5 )= 4x 9 x July 8, 2019 16 32 64 128 7 2x 5 4x 11 9 x 6 29 4x 9 5 2x x 7 6x 8 5 x 7 = 35 2x 7 9 - 2(- 4x + 7) = 7