小学题目4h-6n+7n-2h=多少

2025-06-28 09:03:28
推荐回答(2个)
回答1:

4h-6n+7n-2h=2h+n

回答2:

4h-6n+7n-2h
=(4h-2h)+(7n-6n)
=2h+n