2(3a-4b)-3(3a+2b)+4(3a-2b)怎么化简.
问题描述:
2(3a-4b)-3(3a+2b)+4(3a-2b)怎么化简.
答
2(3a-4b)-3(3a+2b)+4(3a-2b)
=6a-8b-9a-6b+12a-8b
=9a-22b