2.7÷(0·45X(1·69一0·89))怎么做

2.7÷(0·45X(1·69一0·89))怎么做
2025-06-26 11:51:35
推荐回答(2个)
回答1:

2.7÷[0·45X(1·69一0·89)]
=2.7÷[0·45X0.8]
=2.7÷0.36
=7.5

回答2:

2.7÷[0.45×(1.69-0.89)]
=2.7÷(0.45×0.8)
=2.7÷0.36
=7.5