(-2.5)+(-3又1⼀2)+(-1又3⼀4)+3+(-1又1⼀4)有计算过程

(-2.5)+(-3又1/2)+(-1又3/4)+3+(-1又1/4)有计算过程
2025-05-12 21:15:42
推荐回答(2个)
回答1:

(-2.5)+(-3又1/2)+(-1又3/4)+3+(-1又1/4)
=-(2.5+3又1/2)-(1又3/4+1又1/4)+3
=-6-3+3
=-6

回答2:

(-2.5)+(-3又1/2)+(-1又3/4)+3+(-1又1/4)
=-2.5-3.5-1.75+3-1.25
=-(2.5+3.5)-(1.75+1.25)+3
=-6-3+3
=-6