初一数学上册合并同类项专项练习题30.docx
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初一数学上册合并同类项专项练习题30.docx
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初一数学上册合并同类项专项练习题30
4d-5d-8d7z+2a-4z-7a
7a-6d+13a-15d-15a+10d5xy-11xy+12xy+xy
24a2b+2b2c+18a2b-9b2c8m-6m2-9m-7m2-8
6175
—m-—t-—t-—m18m2-4xy-2m2+8
5656
3
—ab+9t-7ab9mn-3x2y+14mn-4mn
4
6b-7b+4b8y-9f-7y-4f
3b+7n+18b-13n+10b-18n8xy-4xy-15xy-xy
13x2y+4y2z-27x2y+8y2z6y+3y2+3y+18y2-7
1175
—m+—t-—t-—m18n2-9mn+7n2+7
3838
1
—xy-2t-8xy4xy-17x2y-17xy-10xy
5
2c-4c-2c9n-6d+3n-4d
8b+5c+11b+9c-18b+19c6xy+20xy-11xy-xy
28a2b+4b2c+22a2b+6b2c3x+4x2+4x-14x2+6
3175
—z-—n-—n+—z12x2-6ab-6x2+2
4848
6
—ab-9z+3ab5ab+16a2b-11ab+26ab
5
3a+5a-8a4m-9d-8m-8d
8m-4n+15m-15n+13m-19n4xy+20xy+18xy-xy
14a2b-2y2z+26a2b-9y2z6t-6t2-7t-8t2-1
1675
—x+—y-—y+—x11x2-3mn+8x2-5
2727
1
—xy+4n+8xy7ab-9x2y-8ab+8ab
2
8a+4a-2a10m+5b+8m-8b
4b+3n+11b-20n-11b+14n5xy-16xy+12xy+xy
17x2y+9b2c+5x2y+8b2c5y+7y2+8y+6y2+6
1175
—m+—y+—y+—m4n2-4pq-3n2-8
2828
1
—mn+9z+8mn7xy+6a2b+19xy-4xy
6
4f+3f-9f8z-5c+4z-6c
4m+5d+15m-13d-16m+12d9pq-19pq+19pq+pq
18a2b+2b2c+22a2b+9b2c4y-7y2+6y+16y2-4
1175
—m+—n-—n+—m6x2+5pq-6x2+8
3838
1
—ab-8n-3ab2mn+12a2b+7mn+16mn
5
3e+9e+7e7x+6f+3x+9f
4b-7d-4b-5d-14b-16d2ab-11ab-12ab-ab
16a2b-5b2c+7a2b+6b2c6t+9t2-5t+11t2-3
1175
—m-—y+—y+—m16z2+7ab-3z2+2
4646
1
—ab+8m-2ab4xy-7x2y-7xy+8xy
7
4c+7c+5c7z+3c+4z-5c
3m+7n-3m-2n-18m+13n4ab-16ab-17ab-ab
19x2y-5b2c-30x2y-5b2c3z-8z2-9z+18z2+5
2175
—z-—y-—y-—z13t2+9pq+9t2-6
3636
8
—mn+6t-7mn5pq-19a2b+3pq-24pq
7
3c-9c+8c7t+8a-6t-4a
8m+2d-16m+4d+18m-16d5xy-12xy+20xy+xy
2a2b-8b2c-11a2b+7b2c4y-4y2-4y-4y2-8
5575
—m-—y+—y-—m15y2+4ab-4y2+3
4646
1
—ab+2t+6ab9ab-15a2b-14ab+17ab
3
3c+8c-6c8y-8c-7y+4c
8m+5c-12m+15c-18m+16c4ab-15ab+17ab+ab
21x2y+6b2c-4x2y-4b2c7n-2n2-4n+11n2+2
3175
—x+—n-—n-—x2m2-4ab-9m2-5
4646
1
—pq-4y+8pq4xy-14x2y-20xy-8xy
8
9f-7f-5f6n+8d+5n-3d
9b+6n+5b+17n-18b+18n8mn+19mn-13mn+mn
15a2b+9y2z+20a2b+6y2z6m+3m2-4m+2m2-3
5975
—z-—t+—t-—z10t2+4mn+5t2+9
4848
6
—mn-5n+8mn9mn+10a2b-13mn-10mn
5
4c+8c-8c9z-6b-6z+3b
8a-2n+8a-7n-20a+10n3ab-13ab+15ab-ab
24x2y-9y2z-11x2y+2y2z4m+6m2-6m+20m2+1
3575
—x+—n-—n+—x19t2-6xy+2t2+5
4646
1
—ab+6z-8ab2pq+18a2b-20pq-17pq
3
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- 初一 数学 上册 合并 同类项 专项 练习题 30