3 2x 7 )= 12 July 8, 2019 16 32 64 128 2x 3 3x 8 7 12 12x 3 2x 7 6 2x 7 )- 3 12x 21 2x 3 3x 2 12x 7 2x 3 3x 2 12x 7 0 5 12x 3 )- 7 2x 1 X 3 2x 7 )= 12 3 2x 7 = 3x 12 2 x 3 )-( 2x 7 )= 12 5 2x 3 )+ 7 12 5 x 1 2x 3 3x 8 7 12 solve and check 2x 3 3x 4 7 12 X 3 4 2x 7 12 2 4x 5 2x 3 7 12 2x )/ 3 3x )/ 8 7 12 solution