2x 5 3 7 July 8, 2019 16 32 64 128 2x 5 3 7x 2x 5 3 7 2 5 2x 3 7 x 1 5 2x 3 )= 7x 15 2x 5 7x 3 4x 2x 1 5 3 7 5 2x 3 4x 7 2x 3 5 x 7 4 5 2x )+ 3 7 6 2x 3 5 7 2x 5 divided by 3 7 3x 5 2x 3 7 9 2x 5 )= 3 4x 7 2x 3 5 7 10 2x 3 5 7 3x 1