合并同类项综合练习题84.docx
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合并同类项综合练习题84.docx
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合并同类项综合练习题84
4d+9d-6d7x-3b-7x+6b
3a+8c+13a-8c+19a-11c2ab+8ab+14ab+ab
18x2y-8y2z-11x2y+5y2z3t-6t2+6t-4t2+2
4175
—x+—y+—y-—x7x2-6mn-3x2+4
3838
4
—mn+3y+4mn5pq+5a2b-4pq-11pq
3
3d-7d+3d3m-6f+4m+3f
5a+8c-19a+6c+16a-11c5xy+12xy-16xy+xy
21x2y-7y2z-18x2y-4y2z8y+2y2-2y-10y2-7
2575
—z+—y+—y-—z12m2+4ab+3m2-2
3636
4
—pq-6y-7pq4ab-14x2y-14ab+2ab
5
7b-5b-3b9n+5a-5n+3a
5b-3n-4b-20n+11b-15n8ab+9ab+16ab+ab
11a2b-2b2c-17a2b-6b2c5x-9x2-6x+7x2+7
5875
—x+—n+—n-—x20t2-5ab+2t2-5
4747
8
—mn-7m-9mn9mn-11a2b+10mn-12mn
7
7b+3b+2b5z+7b+7z+3b
2a+8d+20a+11d-13a+16d8pq-9pq-10pq+pq
11a2b-7b2c+3a2b-8b2c3n+9n2-5n-5n2+2
1775
—x-—t-—t-—x16z2+9ab-7z2-8
5656
9
—xy+7m+9xy7mn-4x2y+7mn-11mn
8
8f-2f-4f4m+2a-9m+2a
3a+6c+20a+5c-16a-18c3pq-12pq-15pq+pq
15x2y-8y2z+29x2y-8y2z3t+2t2+7t+9t2+5
1775
—x-—t-—t-—x16t2-9pq-2t2-1
2828
9
—ab+4t+7ab6mn+2a2b-15mn+22mn
8
6a-7a-4a6t+6f+5t+9f
2a-9n-17a-20n-18a+10n5mn+5mn+19mn+mn
27a2b-4b2c+4a2b+2b2c3t-4t2+7t+8t2+1
1575
—m+—y+—y-—m20t2+2mn+4t2-7
2626
1
—mn-3n+9mn7pq-3a2b+2pq-18pq
3
8e-8e+9e4n+9e-7n-9e
7m-4c-6m-14c+14m+20c3ab+16ab-19ab-ab
23a2b-5b2c+28a2b-6b2c9m-3m2-5m+4m2-7
1675
—m+—t-—t-—m18y2-8ab+6y2+8
4747
1
—mn+8y+8mn9pq+20x2y+12pq-2pq
6
3a-4a+4a9m-8c-4m+9c
8m-4d-2m+15d+14m-16d4ab-6ab+10ab-ab
18a2b+4y2z-11a2b-3y2z5t-8t2+6t-2t2+7
1575
—m-—t+—t+—m6t2-6pq+9t2+4
2626
1
—xy-3x-4xy8xy+18x2y-10xy-14xy
7
7b-3b-4b6x+9d+9x+7d
9a-6n-3a-4n-19a+15n8ab+6ab-16ab+ab
9a2b+9y2z-25a2b-3y2z8y+4y2+2y-6y2-2
1875
—x+—n-—n-—x12x2+5xy-7x2+5
2727
3
—xy-8t+5xy8ab-3x2y-6ab-17ab
4
3e-4e+8e3z+7d+3z-2d
8b-3c-17b+20c+19b+12c9xy-11xy+15xy+xy
29a2b+2y2z+13a2b+2y2z3n+8n2-9n+19n2+2
4775
—m+—n+—n-—m6y2+9mn-9y2+4
5656
3
—mn+6y+6mn6mn+9x2y+13mn-9mn
4
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