七分之五加(五分之三减七分之二)

2025-12-16 23:23:16
推荐回答(5个)
回答1:

回答2:

=5/7-2/7+3/5
=3/7+3/5
=15/35+21/35
=36/35
=1又1/35

回答3:

你好:

5/7+(3/5-2/7)
=5/7-2/7+3/5
=3/7+3/5
=15/35+21/35
=36/35

愿对你有帮助!

回答4:

回答5:

5/7+(3/5-2/7)
=5/7+3/5-2/7
=36/35