数学题a-[b+(c-b)]=等于多少
问题描述:
数学题a-[b+(c-b)]=等于多少
答
a-[b+(c-b)]
=a-[b+c-b]
=a-c
数学题a-[b+(c-b)]=等于多少
a-[b+(c-b)]
=a-[b+c-b]
=a-c