7 5 x 4 3 2 5 x 4 3 July 8, 2019 16 32 64 128 5 x 4 )/ 3 2 5x 3 )/ 5 6 x 4 )/ 7 5 x 7 = 35 3 x-5=x+3 7 5 x 3 4