(33/17+20/13+33/7)/(3/7+3/13+3/17)怎样简便计算

问题描述:

(33/17+20/13+33/7)/(3/7+3/13+3/17)怎样简便计算
数学简便计算

(33/17+20/13+33/7)/(3/7+3/13+3/17)=(33/17+33/13+33/7-13/13)/(3/7+3/13+3/17)=(33/17+33/13+33/7-1)/(3/7+3/13+3/17)=(33/17+33/13+33/7)/(3/7+3/13+3/17)-1/(3/7+3/13+3/17)=11*(3/17+3/13+3/7)/(3/7+3/13+3/17)...