合并同类项综合练习题66.docx
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合并同类项综合练习题66.docx
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合并同类项综合练习题66
5a+4a-4a10x+8a+3x+5a
9b+8n+4b+20n-12b-18n3xy-11xy+14xy+xy
22x2y-5y2z+24x2y+6y2z2z-9z2+2z+2z2+5
4175
—m-—n+—n-—m18z2-2ab+6z2+3
3838
1
—ab+4x-9ab6mn+14a2b-7mn-12mn
2
2a+4a-6a4m-8f+7m-6f
8m-3d+5m-19d+20m-12d4xy+7xy-19xy+xy
23a2b+2b2c+28a2b-3b2c8x-6x2-5x-14x2-9
1175
—z+—y-—y-—z14t2-8pq-9t2+9
5858
3
—xy+9z-4xy7mn-2a2b+9mn-18mn
4
3a+9a-5a7x-3b-3x+9b
6m-2d+11m+18d-16m-16d4ab-5ab+10ab-ab
30x2y-3b2c-26x2y-7b2c2z-3z2+8z+20z2-6
5675
—z+—t-—t+—z3n2-7ab+2n2+8
4747
1
—ab-4z+5ab6mn-16x2y-19mn+8mn
2
4c+2c+9c4x-8c+2x-7c
5b-6d-13b-10d-20b+17d6mn+3mn+17mn+mn
24x2y-6b2c+4x2y-6b2c7x-8x2-5x-6x2-7
1675
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2727
5
—ab+5z-3ab6ab-20a2b+5ab-15ab
6
4b-6b-4b2y+6e-5y+5e
5m-8d+10m+10d-10m+16d2ab+13ab+10ab+ab
25a2b-8b2c-19a2b-9b2c5y-4y2+5y-13y2-1
3175
—m-—y+—y+—m15x2-4xy+7x2+7
2727
3
—mn-4y-7mn5xy-14x2y-4xy+13xy
4
6e+9e-7e3x+2b+7x+10b
4b+2d+7b+4d+14b+14d6mn-8mn+14mn-mn
19x2y-7y2z-4x2y-7y2z2t+8t2+9t-13t2+7
5675
—x+—t-—t-—x5t2+9xy+6t2-7
4747
7
—ab-7x-5ab3mn+19a2b-14mn-20mn
8
9f-4f-2f4y-2f-2y+2f
3a-5d+18a-6d+19a+13d3ab+10ab+15ab+ab
12a2b-7y2z-11a2b-9y2z9n+7n2+8n+7n2-4
1575
—x-—t+—t+—x5y2-6xy-5y2+4
2626
6
—xy-7n-6xy7pq+6a2b+19pq-8pq
5
6e-9e-4e6m+2d+3m+8d
3a-8n-15a+7n+17a+17n4mn-15mn-11mn+mn
4a2b+8b2c-16a2b+2b2c3t-8t2+3t+19t2-7
3975
—x-—n-—n+—x5t2-8ab+9t2+9
2828
1
—ab+8y-7ab6mn+16x2y-15mn-7mn
5
3e+5e-2e3t-6f+4t-5f
2a+9d-12a+18d+13a-16d9mn-13mn-15mn-mn
30x2y-4y2z+17x2y-5y2z5t-5t2+9t-5t2-3
3675
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4747
6
—xy+5n+2xy2pq-13x2y-17pq+29pq
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3c+9c-6c9y-4b+7y+2b
4m+3c-6m-11c-20m+19c9mn-15mn+20mn+mn
11x2y+3b2c+28x2y+3b2c5m-4m2+9m-8m2-2
1575
—m+—n+—n+—m19m2-8pq+2m2+7
5656
3
—ab-5t+4ab2ab-11a2b-11ab-7ab
2
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