简便运算:(-2又3⼀5)+(+3又1⼀4)+(-3又2⼀5)+(+2又3⼀4)+(-1又1⼀2)+(-1又1⼀3)

2024-12-16 14:08:13
推荐回答(3个)
回答1:

(-2又3/5)+(+3又1/4)+(-3又2/5)+(+2又3/4)+(-1又1/2)+(-1又1/3)
=(3又1/4+2又3/4)-(2又3/5+3又2/5)-1又1/2-1又1/3
=6-6-1又3/6-1又2/6
=-2又5/6

回答2:

(-2又3/5)+(+3又1/4)+(-3又2/5)+(+2又3/4)+(-1又1/2)+(-1又1/3)
= -2+3-3+2-1-1-3/5+1/4-2/5+3/4-1/2-1/3
=-2又5/6

回答3:

-2又2/3