初一数学书第122页知识技能1.2第答案!!!要有过程!!!!有的话重赏!!!!
师范版,初一上册去括号:-(2m-3)n-3(4-2m)16a-8(3b+4c)t+3分之2(12-9v)-(5m+n)-7(a-3b)-2分之1(x+y)+4分之1(p...
师范版,初一上册
去括号:
-(2m-3)
n-3(4-2m)
16a-8(3b+4c)
t+3分之2(12-9v)
-(5m+n)-7(a-3b)
-2分之1(x+y)+4分之1(p+q)
-8(3a-2ab+4)
4(m+p)-7(n-2q)
化简(包括去括号,合并同类项)
-2n-(3n-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(xy-2z)+(-xy+3z)
-4(pq+pr)+(4pq+pr) 展开
去括号:
-(2m-3)
n-3(4-2m)
16a-8(3b+4c)
t+3分之2(12-9v)
-(5m+n)-7(a-3b)
-2分之1(x+y)+4分之1(p+q)
-8(3a-2ab+4)
4(m+p)-7(n-2q)
化简(包括去括号,合并同类项)
-2n-(3n-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(xy-2z)+(-xy+3z)
-4(pq+pr)+(4pq+pr) 展开
4个回答
展开全部
去括号:
-(2m-3) =-2m+3
n-3(4-2m) =n-12+6m
16a-8(3b+4c) =16a-24b-32c
t+3分之2(12-9v)=t+8-6v
-(5m+n)-7(a-3b)=-5m-n-7a+21b
-(x+y)+4分之1(p+q)=-2分之1x-二分之一y+p+四分之一q
-8(3a-2ab+4)=-24a+16ab-32
4(m+p)-7(n-2q)=4m+4p-7n+14q
化简(包括去括号,合并同类项)
-2n-(3n-1)=-2n-3n+1=-5n+1
a-(5a-3b)+(2b-a)=a-5a+3b+2b-a=-5a+5b
-3(2s-5)+6s=-6s+15+6s=15
1-(2a-1)-(3a-3)=1-2a+1-3a+3=-5a+3
3(-ab+2a)-(3a-b)=-3ab+6a-3a+b=-3ab+3a+b
14(abc-2a)+3(6a-2abc)=14abc-28a+18a-6abc=8abc-10a
3(xy-2z)+(-xy+3z)=3xy-6z-xy+3z=2xy-3z
-4(pq+pr)+(4pq+pr)=-4pq-4pr+4pq+pr=-3pr
-(2m-3) =-2m+3
n-3(4-2m) =n-12+6m
16a-8(3b+4c) =16a-24b-32c
t+3分之2(12-9v)=t+8-6v
-(5m+n)-7(a-3b)=-5m-n-7a+21b
-(x+y)+4分之1(p+q)=-2分之1x-二分之一y+p+四分之一q
-8(3a-2ab+4)=-24a+16ab-32
4(m+p)-7(n-2q)=4m+4p-7n+14q
化简(包括去括号,合并同类项)
-2n-(3n-1)=-2n-3n+1=-5n+1
a-(5a-3b)+(2b-a)=a-5a+3b+2b-a=-5a+5b
-3(2s-5)+6s=-6s+15+6s=15
1-(2a-1)-(3a-3)=1-2a+1-3a+3=-5a+3
3(-ab+2a)-(3a-b)=-3ab+6a-3a+b=-3ab+3a+b
14(abc-2a)+3(6a-2abc)=14abc-28a+18a-6abc=8abc-10a
3(xy-2z)+(-xy+3z)=3xy-6z-xy+3z=2xy-3z
-4(pq+pr)+(4pq+pr)=-4pq-4pr+4pq+pr=-3pr
展开全部
-(2m-3) =-2m+3
n-3(4-2m) =n-12+6m
16a-8(3b+4c) =16a-24b-32c
t+3分之2(12-9v)=t+8-6v
-(5m+n)-7(a-3b)=-5m-n-7a+21b
-8(3a-2ab+4)=-24a+16ab-32
4(m+p)-7(n-2q)=4m+4p-7n+14q
化简(包括去括号,合并同类项)
-2n-(3n-1)=-2n-3n+1=-5n+1
a-(5a-3b)+(2b-a)
=a-5a+3b+2b-a
=-5a+5b
-3(2s-5)+6s
=-6s+15+6s
=15
1-(2a-1)-(3a-3)
=1-2a+1-3a+3
=-5a+3
3(-ab+2a)-(3a-b)
=-3ab+6a-3a+b
=-3ab+3a+b
14(abc-2a)+3(6a-2abc)
=14abc-28a+18a-6abc
=8abc-10a
3(xy-2z)+(-xy+3z)
=3xy-6z-xy+3z
=2xy-3z
-4(pq+pr)+(4pq+pr)
=-4pq-4pr+4pq+pr
=-3pr
望采纳~
n-3(4-2m) =n-12+6m
16a-8(3b+4c) =16a-24b-32c
t+3分之2(12-9v)=t+8-6v
-(5m+n)-7(a-3b)=-5m-n-7a+21b
-8(3a-2ab+4)=-24a+16ab-32
4(m+p)-7(n-2q)=4m+4p-7n+14q
化简(包括去括号,合并同类项)
-2n-(3n-1)=-2n-3n+1=-5n+1
a-(5a-3b)+(2b-a)
=a-5a+3b+2b-a
=-5a+5b
-3(2s-5)+6s
=-6s+15+6s
=15
1-(2a-1)-(3a-3)
=1-2a+1-3a+3
=-5a+3
3(-ab+2a)-(3a-b)
=-3ab+6a-3a+b
=-3ab+3a+b
14(abc-2a)+3(6a-2abc)
=14abc-28a+18a-6abc
=8abc-10a
3(xy-2z)+(-xy+3z)
=3xy-6z-xy+3z
=2xy-3z
-4(pq+pr)+(4pq+pr)
=-4pq-4pr+4pq+pr
=-3pr
望采纳~
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够多的啊!我好像还没学到那里。
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tttttttttttttttttttttttttttttt
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