2 7 4x July 8, 2019 16 32 64 128 2 7 * 4x 8 2 7 4x 3 )=- 131 2 7 4x 18 )= 12 2 7 4x3 2 4x 7 0 7 2 4x 3 2 4x 7 )+ 3x 7 2 4x7 2 4x 7 2x 2 4x 7 1 7 2 4x 5 2 4x 7 2x 1 X 2 7 4x 5 X 2 7 )( 4x 4 6x 2 7 4x