$ frac 2 5 y 4 7 - frac 9 10 y$ July 8, 2019 16 32 64 128 Frac 2x 5 + frac 7x 5 $- frac 9 14 + frac 2 7 =$ Frac 5 8 cdot frac 2 5 8 5 ⋅ 5 2 Frac 3 4 = 4 3 = frac 1 2 - frac 7 9 x 2 1 − 9 7 x Frac 5 y-7 = frac 3 y-5
