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