X 3 18 12 9 July 8, 2019 16 32 64 128 X 3 18 12 9 proportion Frac x 3 18 = frac 12 9 X 3 over 18 12 over 9 15 x 18 12 3 9 3 x 18 x 12 4 x 82 x 9 15 x 18 12 divided by 3 9
