21点七除以中括号4×括号6.34-4点59括号中括号这个式子的简便计算该怎么写

2025-04-30 18:34:12
推荐回答(1个)
回答1:

解:依据题意有,
21.7/[4*(6.34-4.59)]
=21.7/(4*1.75)
=21.7/[4*(2-0.25)]
=21.7/(8-1)
=21.7/7
=3.1