初一数学上册合并同类项专项练习题14.docx
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初一数学上册合并同类项专项练习题14.docx
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初一数学上册合并同类项专项练习题14
5c-6c-7c5x-3b-2x-2b
3a+8n-12a-10n+10a+10n6mn+13mn-13mn-mn
25x2y-5y2z+10x2y+3y2z5x-6x2-7x+7x2+7
4175
—m+—n+—n+—m6z2+8mn+8z2+1
3838
4
—pq-8y-4pq4mn-7a2b-14mn+4mn
5
3f-5f-8f5z-6f-2z+4f
8b+6n-12b+3n-12b-14n7xy-17xy-16xy+xy
28a2b-2y2z-10a2b+9y2z6m-4m2-6m+8m2+7
6175
—z-—y-—y+—z14n2-6xy-6n2+4
5656
1
—mn+5z+4mn5mn-15a2b-18mn-5mn
4
8c-8c-4c10x-3a+5x-5a
7a+4n-9a+9n+16a+17n4xy-17xy+11xy+xy
4a2b+5b2c-8a2b+3b2c9z+4z2+3z-19z2+4
1175
—x-—n-—n+—x14x2-9xy-8x2+7
5656
7
—xy+7z-5xy8xy+19a2b+6xy+28xy
6
2e-2e-9e9y+7f-7y+4f
2b-8c+9b+6c+12b-13c9pq+5pq+19pq-pq
11a2b-7y2z+9a2b-8y2z6t+9t2-4t-19t2+1
3175
—x+—n+—n-—x5n2+3pq-7n2-1
4747
4
—ab+6x-2ab8pq-20x2y+15pq-21pq
5
3f+3f+6f10t-5b-3t-10b
8m-9d+20m+20d-19m+20d2mn+18mn+19mn+mn
17a2b+3y2z+10a2b+8y2z9t-4t2-7t+12t2+7
1175
—x-—t-—t+—x12y2+7mn+7y2+1
2727
1
—mn+7m-2mn3mn-11x2y+4mn+9mn
7
2f-4f+2f3z-5a-7z+2a
2m-2c-15m-3c+13m+17c4ab-17ab+10ab+ab
27a2b-4b2c-12a2b+4b2c7t-4t2-2t-2t2+9
1175
—z-—n-—n+—z13t2-6ab+6t2+1
4848
1
—mn+5x-8mn6ab-11a2b-2ab+11ab
8
8f+4f+6f3x-9c+2x+8c
5m-3n-3m-16n+11m-12n4pq-16pq-16pq+pq
17a2b-8y2z+11a2b+9y2z5y+6y2-6y-19y2+9
3175
—x+—t-—t-—x10n2-5mn+4n2-1
2626
1
—ab+8z+2ab8mn-13a2b-15mn-3mn
7
7f-6f+5f2y+5a-5y+10a
9m-4n-19m+7n-15m+17n8xy-11xy-17xy+xy
18a2b-2y2z-17a2b-8y2z6n+5n2+5n-4n2-2
3975
—m+—n+—n-—m9x2-4pq-7x2-7
4848
3
—mn+7x-2mn6mn-14x2y-17mn-15mn
4
8e-6e+9e2x+4f+8x-2f
3b+5c+3b+7c-14b+17c6ab+4ab+12ab-ab
25x2y+7y2z+7x2y-5y2z2y+7y2+7y+7y2+8
4175
—m-—n+—n+—m19z2+9xy-5z2-1
5858
1
—xy-8n+6xy5mn+13x2y-14mn-5mn
6
5e-4e+6e7x+5b-8x-8b
6m-8d+8m-8d-19m+19d4ab+8ab+15ab+ab
19x2y-7y2z-2x2y+7y2z4z-5z2+4z-7z2+5
1175
—x-—n-—n-—x18t2-3xy+6t2+5
4848
1
—xy+3n-2xy5pq+17x2y+18pq+22pq
3
4d+9d+8d3y+9d-7y+3d
3a+2d+2a-16d+14a-10d3mn+13mn-16mn-mn
21a2b-9y2z-29a2b+5y2z5z-6z2-3z+9z2+6
4175
—m-—t+—t+—m6y2-2xy-8y2-3
5656
1
—mn-3y-5mn6pq+16x2y+19pq+16pq
7
9f-5f+9f9t-3d-8t+7d
9b-8c+6b-18c+14b+13c4mn-14mn-18mn+mn
26a2b-4b2c-6a2b-9b2c3t+4t2-5t+4t2+3
6175
—x+—n+—n+—x5m2-8ab-9m2+2
5757
5
—ab+5z+8ab7mn-4a2b-9mn-6mn
6
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- 初一 数学 上册 合并 同类项 专项 练习题 14