7 3 4x 5 )= 4 3x July 8, 2019 16 32 64 128 3 4x 7 )- 5 3x 4 )= 17 7 4x 5 )- 4 2 3x )= 6x 3 3 4x 7 )- 4 5 3x )= 10x 13 7 3x 2 )- 5 4x 3 4 x 2 )+ 1 5 x 7 = 35