七年级数学上册合并同类项练习题精编55.docx
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七年级数学上册合并同类项练习题精编55
6(-ab-2a)-(2a-7b)12(abc+3a)-7(6a-3abc)
3(xy+3z)-(-xy+2z)-6(pq+pr)-(7pq-pr)
9m-(3m-6)2m+(4m-6p)-(9p-m)
-5(5b-7)+5b5-(3b+4)-(7b-6)
8(-ab+7a)+(6a-7b)12(abc+4a)-2(3a+9abc)
3(xy-9z)-(-xy-2z)-4(pq-pr)+(4pq-pr)
-6b-(7b+9)b+(6b+4c)+(2c-8b)
2(3t+10)-8t9+(6n+3)-(6n-10)
2(ab+5a)+(6a-4b)8(abc-7a)-7(3a+9abc)
3(xy-9z)-(-xy-8z)-4(pq-pr)+(8pq-pr)
7b-(2b+9)8b+(4b+5d)+(7d-b)
-9(4m+10)+2m8+(6n-3)-(6n-8)
7(ab-3a)-(9a+8b)12(abc+2a)+8(9a-9abc)
5(xy-8z)+(-xy+5z)-8(pq-pr)+(4pq+pr)
-4x-(2x+5)x-(7x+5z)+(5z-x)
3(9n+9)+4n2+(8x+5)-(4x+10)
4(ab-8a)-(3a+4b)16(abc+3a)+3(9a-8abc)
5(xy+7z)-(-xy+3z)-3(pq+pr)-(4pq+pr)
-6m-(4m-5)m-(3m+9p)+(7p-m)
3(3t+10)-3t6+(4y-7)+(8y-7)
9(-ab-5a)+(8a+9b)18(abc-7a)-7(7a-7abc)
5(xy-7z)-(-xy-9z)-5(pq+pr)-(3pq+pr)
4b-(9b-8)b-(3b+9s)+(6s-b)
2(6m+7)-4m7+(2a-1)+(5a-8)
3(-ab+7a)-(5a-5b)17(abc+6a)+2(9a-9abc)
2(xy-5z)+(-xy+8z)-7(pq+pr)+(4pq+pr)
-6m+(5m+5)9m+(3m+8z)-(7z-m)
9(5s+7)+5s3+(7y+3)-(9y+2)
5(ab-8a)-(2a-7b)14(abc+4a)-4(2a+7abc)
5(xy+6z)-(-xy+7z)-6(pq-pr)-(8pq-pr)
8b+(3b-9)b+(4b+5c)-(9c+b)
8(8n-6)+3n1+(5m+7)+(6m+8)
8(-ab+5a)-(8a-6b)2(abc+5a)-6(3a+4abc)
9(xy+4z)+(-xy-3z)-7(pq-pr)+(9pq-pr)
-3b-(9b-8)5b-(6b-6s)+(3s-5b)
9(9a-10)-4a2-(6b+6)-(2b-5)
2(ab+6a)-(2a+9b)14(abc-2a)-4(3a-2abc)
4(xy+3z)+(-xy-4z)-6(pq+pr)+(5pq-pr)
-2x+(9x+8)8x+(7x-7z)-(2z-x)
9(3t+9)+5t2-(9n-9)-(3n+8)
3(ab+9a)-(9a+9b)5(abc-5a)-4(9a-4abc)
6(xy+6z)-(-xy-2z)-5(pq-pr)-(6pq-pr)
4a-(8a+9)a-(5a+4p)-(4p+2a)
-3(4m+8)+8m2+(6a+3)+(9a-3)
4(ab-4a)-(7a+9b)12(abc+8a)-5(4a+3abc)
4(xy-4z)+(-xy-2z)-7(pq+pr)-(2pq+pr)
8a-(6a+5)a-(6a-8z)-(2z-a)
8(2m+2)+6m5-(4m-3)+(8m-9)
2(-ab-9a)-(3a+4b)7(abc+4a)-3(6a-4abc)
6(xy+3z)-(-xy+2z)-7(pq-pr)+(3pq-pr)
-5x+(7x-1)3x+(4x+4p)+(3p-9x)
8(9m+2)-4m10-(7y-5)-(2y-2)
2(-ab+6a)-(9a+2b)19(abc+2a)+5(7a-5abc)
5(xy+6z)-(-xy-9z)-8(pq-pr)+(3pq-pr)
7n+(6n-7)n-(9n+3c)-(9c-n)
-5(5t+4)-3t8+(4b+10)+(6b+8)
3(-ab-2a)-(2a+5b)9(abc-8a)-6(9a+9abc)
6(xy+8z)-(-xy-8z)-7(pq-pr)+(2pq-pr)
-9n+(7n+5)n-(3n-8s)-(5s-n)
-7(7a+9)+8a8+(8a+10)-(9a-6)
4(ab+3a)-(2a+7b)4(abc-4a)-9(9a+5abc)
7(xy-3z)-(-xy+6z)-3(pq+pr)+(3pq-pr)
-2b+(9b+5)b+(9b-4z)+(9z+7b)
8(4s+5)+8s8-(5a-5)+(5a-8)
4(-ab-2a)-(7a+4b)14(abc+2a)-9(9a-3abc)
6(xy+2z)+(-xy+6z)-6(pq-pr)-(6pq+pr)
-4y+(3y-4)y-(2y-5p)-(8p+4y)
8(6b+6)-8b9+(6a+7)-(2a-6)
4(ab+8a)-(7a+4b)17(abc+5a)+6(3a-9abc)
6(xy+6z)+(-xy+8z)-6(pq+pr)+(6pq+pr)
9b+(9b-5)9b-(6b-4c)-(4c-b)
6(3b+8)+7b2-(8n-7)-(6n+3)
9(-ab-5a)-(9a+6b)14(abc-2a)+9(2a+7abc)
8(xy+3z)-(-xy+2z)-2(pq+pr)+(2pq+pr)
3a-(6a-9)9a-(8a-7z)+(3z+7a)