Frac 1 2r 3 3 left 4 - frac 3 2r right July 8, 2019 16 32 64 128 Frac 2 3 - frac 1 2 Frac 2 3 $- frac 3 4 + left(- frac 1 3 right)=$ Frac 3 4 Dfrac 2 3
