合并同类项综合练习题19.docx
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合并同类项综合练习题19
5d+7d+4d4z-7b-6z+7b
7m+4n+15m-3n-12m+10n5xy+20xy+15xy+xy
7a2b-2b2c+5a2b-5b2c2y+4y2-7y+13y2+1
4175
—z+—n+—n+—z10t2-9mn+2t2-7
3636
4
—pq+6m-4pq3mn+11a2b-19mn+30mn
5
6e+6e+3e6z+5a+9z-10a
3m-7d+9m+4d+20m-19d9mn+13mn+15mn-mn
14a2b-9b2c-9a2b+4b2c9z+7z2-6z+16z2-6
1675
—m-—n-—n+—m4t2-4xy-9t2-7
3737
3
—xy-2n-8xy3pq-19a2b-12pq+4pq
2
6c-8c+5c3t-6a-3t+9a
6a+9d+2a+14d-16a+17d2ab-17ab+10ab+ab
13x2y+5y2z-21x2y+5y2z7y-9y2-5y+3y2+4
1175
—z+—t-—t-—z19z2+8pq-8z2-9
2828
1
—mn-6x+2mn7ab-9x2y-14ab+3ab
7
8a+8a+6a6t-5d+4t-3d
4b+3n+14b-12n-16b+13n2mn-14mn+15mn+mn
23a2b+8y2z-27a2b-6y2z7z-7z2-4z-20z2+1
3675
—z-—t-—t+—z4m2-7pq-5m2-6
2727
7
—pq-3x+6pq7ab-8x2y-6ab-16ab
8
6d-9d-3d10z+9f-4z+7f
7m-5d-2m-7d+14m+20d4mn-3mn+19mn-mn
25x2y-9b2c-25x2y+8b2c5z-7z2+6z+10z2-6
3575
—z-—y+—y-—z9z2-9mn+3z2+6
4646
3
—pq-4z+9pq8pq-7a2b-13pq+9pq
4
7d+2d-9d7x-6b+7x-7b
7b-3d+12b+17d+14b-19d8xy-11xy+16xy-xy
17a2b+9b2c-4a2b-3b2c8t+9t2+9t-20t2+2
1775
—m-—n+—n-—m15y2-8xy+5y2-7
4848
6
—mn+8t-8mn2ab-16a2b-5ab-27ab
5
6d-7d-2d9t+6b+6t+8b
6m-5c+11m-6c-17m+20c4ab-17ab-12ab-ab
12a2b-8b2c-23a2b+5b2c7m+9m2+9m+20m2-6
6875
—m+—t+—t+—m17x2+9pq+5x2-5
5757
1
—pq-7z-2pq5mn-20a2b-12mn+17mn
5
5b-7b-8b7n+9e+3n+3e
6a+8c-18a+4c-11a-20c9mn-17mn+20mn-mn
7x2y+9y2z-19x2y-3y2z4y+7y2+5y+19y2+7
1575
—x+—n-—n+—x14x2+3xy-4x2-7
5656
7
—pq-3z-6pq4pq-20a2b-9pq+20pq
8
5c-4c+4c5x+5e+7x+10e
6a+6n-14a+17n+20a+15n4pq+20pq+17pq+pq
17x2y-3y2z+27x2y+6y2z3t-3t2+8t-10t2+8
1175
—m+—n+—n+—m18m2-3mn-9m2+8
4646
1
—xy-4z+3xy6ab-6x2y+15ab+5ab
8
2d-8d+6d10y+9d-6y+8d
4b+9d+18b-7d-14b+16d2xy+8xy+12xy-xy
9a2b+2y2z-11a2b+6y2z6z-6z2-2z+8z2-4
5775
—x-—t-—t-—x18y2+3xy+6y2-7
4848
7
—pq-6z-9pq4xy-13x2y+3xy-11xy
6