7.2÷0.6+7.2÷0.4简便计算

2025-05-11 12:19:20
推荐回答(1个)
回答1:

7.2*5/3+7.2*5/2
=7.2*(10/6+15/6)
=7.2*25/6
=1.2*25
=1.2*5*5
=6*5
=30