43*(1/43+1/27)*27怎么简便运算
问题描述:
43*(1/43+1/27)*27怎么简便运算
答
43*(1/43+1/27)*27
=(43*1/43+43*1/27)*27
=(1+43/27)*27
=1*27+43/27*27
=27+43
=70