2-3⼀7-5⼀8-4⼀7 17⼀8-(2⼀3+7⼀8)减1⼀3。 简便计算

2-3/7-5/8-4/7 17/8-(2/3+7/8)减1/3。简便计算急急急
2025-02-28 00:15:44
推荐回答(3个)
回答1:

2-3/7-5/8-4/7

=2-(3./7+4/7)-5/8
=2-1-5/8
=1-5/8
=3/8

17/8-(2/3+7/8)减1/3

=17/8-2/3-7/8-1/3
=17/8-7/8-(2/3+1/3)
=1-1
=0

回答2:

2-(3/7+4/7)-5/8=3/8
(17/8-7/8)-(2/3+1/3)=1/4

回答3:


第一个