4a-(a-3b)化简
问题描述:
4a-(a-3b)化简
答
=4a-a+3b
=3a+3b
=3(a+b)希望好评啊
4a-(a-3b)化简
=4a-a+3b
=3a+3b
=3(a+b)希望好评啊