合并同类项综合练习题18.docx
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合并同类项综合练习题18
6d+2d+7d3y+6f-3y-8f
3a-5n-17a-3n+12a-17n4xy+5xy+18xy+xy
18a2b-8y2z+24a2b+5y2z6t+3t2-9t+15t2-5
1975
—m-—n+—n+—m12x2-3ab+2x2-3
2828
6
—ab-3z-3ab5xy+16a2b+17xy-15xy
5
5d-7d+3d2n-4f+8n-4f
4a+2c+7a-4c-13a+20c8mn-9mn+20mn+mn
19x2y-6b2c-27x2y+5b2c9x+9x2-4x-6x2+8
1175
—m-—t-—t-—m11m2-6mn-3m2+6
2626
2
—mn+5y-4mn6xy-7a2b+17xy-3xy
3
8d-8d+5d3x-8d+4x+5d
3m-4n-20m+19n+18m-17n5pq-19pq+16pq-pq
21a2b+4b2c-30a2b-5b2c8y+5y2+9y-6y2+9
2175
—x+—n+—n+—x6t2-9xy+6t2+1
3838
1
—mn-2t+6mn3mn-16a2b-8mn-10mn
4
8b+2b-7b3x-5c-2x+10c
5b+4n+8b-4n+18b+18n3mn-7mn+19mn+mn
29a2b-2b2c-2a2b+8b2c3m+7m2-4m+10m2+2
3175
—z-—t-—t-—z4m2+2mn+4m2+5
2727
6
—pq+4x+4pq6ab-10a2b+10ab-14ab
7
2c-3c-7c10n+2d-2n-4d
2a-5n+11a+11n-15a+13n2pq+14pq+18pq+pq
6a2b+6y2z+24a2b+2y2z3y+9y2+7y+20y2-5
6775
—x+—y+—y-—x13y2-5mn+7y2+6
5656
1
—xy-4z-4xy4pq+8x2y+14pq+25pq
3
2e-4e-6e4y+5a+9y-6a
7b+4d+9b+19d-13b-16d5pq-3pq-15pq-pq
27a2b-3y2z-12a2b+8y2z5t+7t2+7t+17t2-7
4675
—z-—n+—n+—z16x2+2xy-8x2-2
5757
8
—mn-9z-7mn3mn-17a2b+10mn+25mn
7
9d+9d+4d5y-4c-2y-9c
2b+7d-6b+11d-20b-19d6xy-3xy-13xy-xy
30a2b-7b2c+5a2b+8b2c8y-6y2+5y-13y2-9
1175
—m+—t-—t+—m5t2+3xy-4t2-1
4848
6
—xy+7m+8xy7mn+4x2y-2mn-7mn
5
3a-3a+9a4n-7a-8n+2a
7m-8c-14m-2c+16m+13c2ab-2ab+14ab+ab
22a2b+2b2c-17a2b+2b2c3m+5m2+8m-4m2+1
5775
—z+—t+—t+—z12z2+9mn-6z2+5
4646
8
—mn+3x-5mn6mn+13x2y-7mn+26mn
7
7b+8b-3b8n+7b+3n-9b
5a+8d-16a-3d+20a+19d2ab-6ab+15ab+ab
28a2b-4b2c-4a2b+2b2c9y+3y2+3y-9y2-5
1175
—z-—t-—t-—z15t2-2pq+9t2-4
5757
5
—pq+8y-8pq9pq-14x2y-15pq-13pq
6
9f-2f-3f5m+2d+3m+6d
8b-5d-8b-16d+14b-19d8pq+10pq+12pq-pq
13x2y-6b2c+12x2y-8b2c3y-9y2+5y+10y2+8
3775
—m-—y+—y+—m7m2+4mn-2m2+7
2626
7
—xy-2n-7xy3mn+11a2b-3mn+30mn
6