20.88÷0.8-12.9+1.1脱式计算,能简算的要简算.

问题描述:

20.88÷0.8-12.9+1.1脱式计算,能简算的要简算.

20.88÷0.8-12.9+1.1
=26.1-12.9+1.1
=26.1-13-1
=12.1