1加2减3加4加5减6加7加8减9加10加11减12这道题怎么算

2025-06-26 23:04:09
推荐回答(1个)
回答1:

1+(2-3)+(4-5)+(6-7)+(8-9)+10+(11-12)
=1-1-1-1-1+10-1
=11-5
=6