3a 2b 5a 9b-8a
问题描述:
3a 2b 5a 9b-8a
答
3a+2b+5a+9b-8a
=(3+5-8)a+(2+9)b
=11b
3a 2b 5a 9b-8a
3a+2b+5a+9b-8a
=(3+5-8)a+(2+9)b
=11b