2 5x 7 13 July 8, 2019 16 32 64 128 5x 2 13x 7 0 4 x 2 )/ 5 7 5x 13 5x 2 13x 7 2 5x 7 2 − 13 33 13x 2 5x 7 3x 4 180 13x 2 5x 7 3x 4 13 2 7 5x 6 2 4x 7 )= 13x 5x 14 X 3 5x 2 13x 7 2x + 7 = 5x + 13 2 5x=7 5
