负[2m减3(m加1)减2]减1

负[2m减3(m加1)减2]减1
2025-05-12 02:05:06
推荐回答(1个)
回答1:

-[2m-3(m+1)-2]-1
=-(2m-3m-3-2)-1
=-(-m-5)-1
=m+5-1
=m+4