7乘以0.9加1.2除以0.3减0.2等于75

问题描述:

7乘以0.9加1.2除以0.3减0.2等于75

(7*0.9+1.2)/(0.3-0.2)=75

(7*0.9+1.2)/(0.3-0.2)=75