7 5x-3 12 July 8, 2019 16 32 64 128 7 5x 3 )= 126 2 5x 7 3 12 3 7 5x 8 )=- 12 3 5x 7 x 12 12x 7 5x 3 46 5x 7 12x 3 5x 12 3 7 Is 7 a solution of 5x 3 12 5 x 7 = 35 7 5x3 5 7 5x3