4⼀5+7⼀10-99⼀100等于多少要有计算过程?

2025-06-20 08:39:58
推荐回答(1个)
回答1:

4/5+7/10-99/100
=80/100+70/100-99/100
=(80+70-99)/100
=149/100
=1.49