初一数学上册合并同类项专项练习题34.docx
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初一数学上册合并同类项专项练习题34
8d+5d-2d7x+4f-3x+2f
2m+7c-10m+13c-11m+12c8ab-19ab-11ab-ab
14x2y+9y2z-15x2y+8y2z9y-6y2+6y+8y2+1
5175
—x+—n-—n-—x2t2-5mn+2t2+7
4848
1
—pq+2n-2pq2xy+7x2y-6xy-11xy
4
4e-9e+7e10n-9b-6n+8b
4m-7c+13m-10c+11m-11c5xy+17xy+20xy-xy
25x2y-6y2z-10x2y+8y2z9y-3y2+2y+18y2+4
4175
—x+—n+—n-—x15x2-8mn-6x2-1
5757
1
—mn+9m+9mn3pq+2x2y-6pq+27pq
6
9c-8c+4c3m+2f+3m-8f
5b-8n+12b+20n+18b-18n5pq-13pq+10pq+pq
16a2b+2y2z-7a2b+6y2z2x-5x2-2x-2x2-9
2775
—z-—y+—y-—z11x2-8mn-9x2+5
3838
1
—ab-3n-3ab8mn-12x2y-3mn-6mn
3
6d+9d-7d2t+5a+8t+10a
4b+3d+6b-17d+15b-16d9xy-10xy+18xy-xy
9a2b-3b2c-9a2b-6b2c8n+6n2+6n+2n2+6
4175
—m+—y-—y-—m3t2-9pq-4t2-8
3636
1
—mn-3n-7mn8ab+8x2y-5ab-17ab
3
4b-2b+5b2t-2e-3t-3e
3b-8n+4b-20n-18b-11n4xy+19xy-13xy+xy
25x2y-4b2c+18x2y-2b2c3m+4m2-4m+10m2-6
1175
—z-—y-—y-—z9n2-9xy-9n2+7
4848
1
—pq+3t-7pq7mn+8x2y-12mn-11mn
3
2e+5e+6e7x+3b+5x-2b
9a-9d-6a+19d-13a-12d9xy-3xy-19xy-xy
14x2y-2b2c+26x2y+7b2c4x-8x2-5x-15x2-6
1175
—m-—n+—n+—m8x2-8ab-6x2+8
5656
1
—mn+7y+3mn3mn+11a2b-13mn-18mn
4
7e-8e+7e4m+6b+4m+7b
8m-8d-4m-8d+11m-13d7mn+3mn-12mn+mn
4x2y-6b2c+15x2y+8b2c6m-4m2-2m-17m2+3
5775
—z+—t+—t+—z15t2-5mn+2t2+4
4646
1
—ab+3z-7ab7mn+3a2b+15mn+3mn
3
4a-5a+9a4t-3a-9t+5a
6b+8d-14b-17d+11b-10d9pq-14pq-17pq+pq
19a2b+3b2c+14a2b+7b2c6x-6x2+6x+2x2-2
1675
—z-—n+—n+—z7y2+6pq-4y2-1
3737
1
—ab+3n+5ab5xy+3x2y-18xy+29xy
8
6a-7a+5a9n+5b+8n-6b
9b-4n+3b+14n-19b-10n5xy+20xy-14xy-xy
21x2y+9b2c+12x2y-7b2c7z-5z2-4z-9z2+3
6575
—m-—n+—n-—m16y2+4ab+3y2+6
5656
1
—xy+6x-9xy3mn+5a2b-14mn-18mn
4
3b+6b+4b5t+6d-4t-10d
2a-9d+5a+8d+15a+18d9mn+9mn-13mn-mn
21a2b-2b2c-2a2b+9b2c8t+9t2-9t-18t2+9
3175
—z-—n+—n-—z17y2+3mn+9y2-8
2727
1
—pq-7t+5pq9xy-16x2y+8xy+7xy
4
2a-6a-2a10m-7d-8m-9d
8b-5d-3b-17d-15b-12d6mn-10mn+14mn-mn
7a2b-6y2z-14a2b-9y2z6n-5n2-9n+9n2-8
5175
—x-—n+—n+—x15y2+4pq-5y2+9
4646
4
—ab+3x-2ab7ab-13a2b-12ab+6ab
3
5a+7a-3a7z+5c-9z-9c
6a-8n+18a+13n+19a+20n2pq-3pq-14pq-pq
25x2y-6b2c-26x2y-8b2c5z-4z2-9z+17z2-9
1175
—m+—y-—y-—m3x2+8mn+7x2+9
2828
1
—pq-6t-6pq9xy+9x2y-19xy+2xy
7