8.8-0.56×(2 5/12-1 19/60+2.275)÷7/20原式

问题描述:

8.8-0.56×(2 5/12-1 19/60+2.275)÷7/20原式

8.8-0.56×(2 5/12-1 19/60+2.275)÷7/20
=8.8-0.56×2.375÷7/20
=8.8-3.8
=5