初一数学上册合并同类项专项练习题5.docx
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初一数学上册合并同类项专项练习题5.docx
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初一数学上册合并同类项专项练习题5
5a-2a-7a7y-6b-5y-4b
8a+4c+15a+20c-13a+18c6xy-15xy+11xy+xy
6x2y+5b2c-9x2y+6b2c7x+9x2-7x+10x2-2
4775
—z-—y-—y+—z10m2-3ab+5m2-4
5656
1
—ab-9n-3ab3xy+10a2b+16xy-26xy
2
6b+9b-6b4n-2c-3n-5c
2m+3n-15m-10n+14m+13n9ab-17ab-10ab-ab
29a2b+2b2c-3a2b-3b2c8t-9t2-3t+3t2+2
1975
—m+—n-—n-—m15t2+4pq-3t2+6
2828
1
—xy-2z-3xy5pq+11x2y+17pq+11pq
8
3d+3d-5d6t-6c-6t+2c
2a+5c+20a-7c-15a+13c8pq+11pq+14pq+pq
15x2y+5b2c-4x2y-6b2c2x-9x2-7x-11x2+9
3675
—x+—y-—y-—x16z2+6pq+2z2-5
4747
1
—ab+3m+2ab2xy-13x2y+18xy-12xy
7
4c+4c-2c5y+9b+7y-6b
7a+4d+19a-8d+20a-20d7mn-4mn-18mn-mn
15a2b-3y2z+21a2b-7y2z2x-5x2+7x-14x2+1
4775
—z-—y-—y-—z6m2+6pq+8m2+8
3636
4
—ab-3x+5ab7xy+9a2b-6xy+7xy
3
7f+8f-3f4y-4c+8y+6c
2a+5d+12a+20d-18a+10d3xy-2xy+14xy-xy
29a2b+9b2c-2a2b+7b2c9n+2n2+2n-16n2+8
1775
—x-—n+—n-—x5t2-5xy+3t2-2
2828
3
—xy+9z-8xy8ab-18x2y-7ab-13ab
2
9c+4c+9c7y-8e+7y-8e
2a-2c+18a-3c-19a-11c8xy-2xy-16xy+xy
5a2b+5b2c-17a2b+2b2c6m-6m2+7m+4m2-7
4875
—z-—t+—t-—z14m2-9xy-9m2+5
3737
1
—ab+4t+6ab4mn-9x2y+2mn+30mn
5
4a+8a-8a6y-7a-9y-6a
3b-4n+12b+3n+10b-13n5mn-19mn+18mn+mn
26a2b+6y2z+6a2b+6y2z2m+2m2-5m+5m2-2
1175
—m+—n+—n-—m14x2+4ab+9x2-1
2626
6
—xy-5m+5xy7pq-3a2b+20pq-3pq
5
9e+8e-7e8t+4c-4t+5c
3m+6c-17m-17c+13m+17c9xy-15xy+17xy+xy
25a2b+4b2c+7a2b+5b2c4m-8m2+2m+4m2-2
3975
—x-—n+—n-—x4z2+2xy+8z2+4
2828
2
—mn-6z-7mn4xy+12x2y+20xy-13xy
3
3b-9b+7b2y-2d-3y+4d
5a+8n+8a-20n-13a-14n8ab-18ab+14ab+ab
30a2b+4y2z-27a2b+4y2z8t+7t2-2t+4t2-8
3175
—z+—t+—t-—z5x2-5xy-2x2+2
4848
2
—xy-4z-4xy5ab-15a2b-13ab-22ab
3
3b+9b-8b5y-5a+3y+10a
5a+3c-16a-2c-19a+18c5pq-12pq-10pq+pq
5x2y-4y2z+29x2y+4y2z5x-3x2-5x-18x2+8
4675
—z-—n-—n+—z4n2-4xy+7n2+4
5757
1
—xy+9t+2xy6mn+2x2y-9mn-20mn
3
4b-8b-2b4y+9d+3y-6d
2m+6c+18m+19c+17m+20c4pq-16pq+10pq-pq
6x2y-3b2c+5x2y-2b2c6z+6z2-8z+8z2+3
1675
—z-—n+—n+—z2x2-4ab+8x2+6
4747
1
—ab+8n+9ab2mn+14a2b-13mn-11mn
3
2f+4f+6f2n-2e+7n-6e
4a-4c+14a-4c+20a+15c9pq-14pq-11pq+pq
18a2b+7y2z-22a2b+6y2z3y+7y2+9y+13y2+3
5175
—x-—y+—y-—x13m2+6mn-6m2+5
4646
5
—ab-3x-6ab4pq+13a2b+13pq+23pq
4
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