1-(2a-1)-(3a+3)a-(5a-3b)+(2b+a)-3(2s-5)+6s3(-ab-2a)-(3a-b)14(abc-2a)+3(6a-2abc)3(xy-2z)+(-xy+3z)-4(pq+pr)+(4pq+pr)

分类: 作业答案 • 2021-12-20 04:22:16

问题描述：

1-(2a-1)-(3a+3)
a-(5a-3b)+(2b+a)
-3(2s-5)+6s
3(-ab-2a)-(3a-b)
14(abc-2a)+3(6a-2abc)
3(xy-2z)+(-xy+3z)
-4(pq+pr)+(4pq+pr)

答

-5a- 1
5b-3a
15
-3ab-9a+b
20abc-10a
2xy-3z
-3pr

答

1.-5a-1 2.5b-3a 3.15 4.-3ab-9a-b 5.8ac-10a 6.2xy-3z 7.-3pr

答

1-2a+1-3a+3=5-5a
a-5a+3b+2b+a=5b-3a
-6s+15+6s=15
-3ab-6a-3a+b=-3ab-9a+b
14abc-28a+18a-6abc=8abc-10a
3xy-6z+xy+3z=4xy-3z
-4pq-4pr+4pq+pr=-3pr

答

-5a-1,-3a+5b,15,-3ab-9a+b,8abc-10a,2xy-3z,-3pr