(15/32*16/35+1/7)/50%的簡便運算急!

(15/32*16/35+1/7)/50%的簡便運算急!

(15/32*16/35+1/7)/50%
=(3/14+1/7)/1/2
=(3/14+2/14)×2
=5/14×2
=5/7