2.5+2.5÷0.5-0.5×3 (1.5+1.5×3)÷0.6+0.4 10.6-(8.4×0.6-0.54)÷0.9

问题描述:

2.5+2.5÷0.5-0.5×3 (1.5+1.5×3)÷0.6+0.4 10.6-(8.4×0.6-0.54)÷0.9
24-【22.7-(9.82-2.02)】 【(17-4.5)×0.2+7.5】×0.31

2.5+2.5÷0.5-0.5×3 =2.5+5-1.5=7.5-1.5=6(1.5+1.5×3)÷0.6+0.4 =6÷0.6+0.4=10+0.4=10.410.6-(8.4×0.6-0.54)÷0.9=10.6-(5.04-0.54)÷0.9=10.6-4.5÷0.9=10.4-5=5.424-【22.7-(9.82-2.02)】 =24-【22.7-...