5 4x 1 3x x 7 July 8, 2019 16 32 64 128 5 4x 3 )- 7 3x 1 )= x 4x 3x 5 )- 2 4x 1 )- x 7 5 x 7 = 35 5 x 5 x 5 x 5 x 5