3 dfrac 10 12 4 dfrac 7 12 July 8, 2019 16 32 64 128 Frac 1 3 +3 frac 3 4 - frac 1 12 Frac 3 4 = 4 3 = frac 1 2 - frac 7 9 x 2 1 − 9 7 x 4= frac 2 3 (x-12)32(x−12)