4分之3与2分之1的和减去4分之3与2分之1的差,差是多少?

2025-06-28 15:00:29
推荐回答(1个)
回答1:

(3/4+1/2)-(3/4-1/2)
=3/4+1/2-3/4+1/2
=1/2+1/2
=1