=``不错我就被这些搞糊涂了,大家教教我化简下列各式:
问题描述：
=``不错我就被这些搞糊涂了,大家教教我化简下列各式:
-2n-(3m-1)
a-(5a-3b)+(2b-a)
-3(2s-5)+6s
1-(2a-1)-(3a+3)
3(-ab+2a)-(3a-b)
14(abc-2a)+3(6a-2abc)
3(ty-2z)+(-ty+3z)
-4(pq+pr)+(4pq+pr)
另外帮我解下这个
去括号的
答
-2n-(3m-1)=-2n-3m+1=1-2n-3m
a-(5a-3b)+(2b-a)=a-5a+3b+2b-a=5b-5a
-3(2s-5)+6s=-6s+15+6s=15
1-(2a-1)-(3a+3)=1-2a+1-3a-3=-5a-1
3(-ab+2a)-(3a-b)=-3ab+6a-3a+b=3a+b-3ab
14(abc-2a)+3(6a-2abc)=14abc-28a+18a-6abc=8abc-10a
3(ty-2z)+(-ty+3z)=3ty-6z-ty+3z=2ty-3z
-4(pq+pr)+(4pq+pr)=-4pq-4pr+4pq+pr=-3pr