5x4 35 7 8 July 8, 2019 16 32 64 128 4 7 x 35 8 x 5 6 8 5 x 4 35 7 5 x 7 = 35 5 x 5 x 5 x 5 x 5 5 x 5 x 5 3 x-5=x+3