⑴-t-t-t⑵9ab-4ab+ab-7ab+5a - 知识问答

⑴-t-t-t⑵9ab-4ab+ab-7ab+5ab⑶-12x+6y-3+10x-2-y⑷5m-7n-8p+5n-9m-

5个回答

⑴-t-t-t
=-3t
⑵9ab-4ab+ab-7ab+5ab
=4ab
⑶-12x+6y-3+10x-2-y
=-2x-5y-5
⑷5m-7n-8p+5n-9m-p
=-4m-2n-9p

相关问题