3、计算.3/4÷7/8÷15/14 (4/9+2/15)÷2/15 3/20÷ 0.2×2/3
问题描述:
3、计算.3/4÷7/8÷15/14 (4/9+2/15)÷2/15 3/20÷ 0.2×2/3
答
=3/4 *7/8*14/15*(4/9+2/15)*15/2*3/20*5*2/3
=3(4/9+2/15)
=26/15