24.3÷[(7.5-5.7)×0.45]简便运算?

2025-03-26 17:24:56
推荐回答(1个)
回答1:

24.3÷[(7.5-5.7)×0.45]
=24.3÷(1.8x0.45)
=24.3÷0.81
=2430÷81
=30