8⼀5-2⼀5×1⼀4-9⼀10怎么算?

2024-11-30 19:58:54
推荐回答(2个)
回答1:

解如下图所示

回答2:

8/5-2/5×1/4-9/10
=8/5-1/5×1/2-9/10
=8/5-1/10-9/10
=8/5-(1/10+9/10)
=8/5-10/10
=8/5-1
=3/5+1-1
=3/5