合并同类项综合练习题129.docx
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合并同类项综合练习题129.docx
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合并同类项综合练习题129
3a-2a+5a7m-4f+4m-6f
9a-5c+6a-13c+17a+15c3mn+16mn+11mn+mn
2a2b+2y2z+8a2b-6y2z3n-9n2+2n-8n2+6
4975
—x-—n+—n+—x20z2+6ab+6z2+2
5858
4
—pq-3t-6pq4pq-6a2b-2pq+25pq
3
4a-8a+7a5t+7f-3t-5f
5m+6d+13m+6d-13m-12d3ab+14ab+16ab-ab
29a2b+6y2z-17a2b+5y2z5z-3z2-8z+3z2+5
5175
—z+—n+—n-—z18m2+2ab-2m2+5
4848
5
—mn+5n-4mn9mn+17x2y+9mn-12mn
6
2e-6e+5e6z+2f+4z-2f
4b-6c+16b+13c-11b-12c8ab+20ab-19ab+ab
20x2y-3b2c-29x2y+8b2c3x-9x2-2x-8x2-8
1775
—z+—y+—y+—z15t2-3ab+9t2+7
2828
5
—xy+9x+4xy5mn+15x2y-18mn-7mn
4
2f+5f+4f4z-9f+8z-10f
4b-2n-7b+20n+14b-14n7xy-12xy-14xy+xy
3a2b-9b2c-19a2b-2b2c4t+9t2-6t+19t2+4
1175
—z+—y-—y-—z7x2-9ab+5x2+9
5757
1
—pq-4m-8pq6mn-16x2y+3mn-26mn
8
6b-2b-3b4n+9f-6n+7f
4m+4c-15m+10c+19m-17c8xy+20xy-18xy-xy
7x2y-6y2z-25x2y+8y2z8z-5z2+7z+17z2+3
2975
—x-—t+—t+—x19y2+2pq-6y2+8
3838
1
—ab-5n+7ab6xy-4x2y+7xy+22xy
5
5d+6d+3d7t+8f-6t-7f
2b-4n-5b-15n+14b+18n7xy-2xy+13xy+xy
21x2y-3y2z+18x2y-8y2z5n+8n2+6n+18n2-8
1575
—z+—n+—n+—z17m2-6pq-8m2-8
2626
2
—ab-6y+4ab8pq+13a2b-19pq-22pq
3
3c+2c-6c7t+6b+5t-5b
6b+6n-2b-16n-14b+17n7xy-7xy-14xy-xy
23a2b+5y2z-19a2b+2y2z9y-8y2-2y-2y2-7
3775
—x+—t+—t-—x20x2+3xy+6x2+2
4646
1
—ab-9t-2ab2pq+13a2b-11pq+17pq
7
7b-4b-5b5x+8d+9x+10d
8a+9d+14a-20d-13a+16d5ab-4ab+15ab+ab
14x2y-4y2z-26x2y-5y2z5t+5t2-3t+4t2+8
4675
—x+—y+—y-—x6x2+2pq+6x2+5
5757
5
—mn+8z-3mn6xy+11a2b+8xy-20xy
6
9d+7d-9d10y+4c+9y+9c
7m+3d+9m+14d+20m+12d2xy-8xy-15xy-xy
12a2b-3y2z+5a2b+4y2z6y+7y2+6y-11y2+2
4875
—m+—n-—n+—m8x2+7xy-9x2-1
3737
6
—pq+2m+8pq3pq+10x2y-11pq-27pq
5
8f+4f+5f10y+8d+9y+10d
7a+7c+5a-17c-18a+15c2mn+15mn-17mn-mn
9x2y+9y2z+20x2y-7y2z6y+4y2+4y+9y2+9
1675
—m-—t-—t-—m7n2+9pq-6n2+3
2727
4
—pq-5t-5pq4ab+13x2y-2ab-11ab
3
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