初一数学上册合并同类项专项练习题2.docx
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初一数学上册合并同类项专项练习题2.docx
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初一数学上册合并同类项专项练习题2
4d+4d+6d5n-4d+9n-3d
7b+8d-4b+2d+15b+15d5ab-7ab+20ab+ab
6a2b-5b2c-8a2b-4b2c6z+3z2-9z-16z2-2
2175
—x+—t+—t+—x19x2-8xy-3x2+3
3838
1
—ab+3y-5ab3pq+4x2y+4pq-25pq
2
4f+3f-9f10y+5c+5y+2c
7b+8d+17b-17d+16b+13d2mn-10mn+20mn-mn
26a2b+6y2z+8a2b+3y2z6t-4t2+6t-16t2-9
1875
—m-—t+—t+—m3x2+8ab-3x2-9
4747
1
—ab-4n+3ab6xy+11a2b+7xy+19xy
2
3f+5f+6f2z-5a+4z+8a
4a+3n+12a-6n+12a-19n3xy+6xy-13xy-xy
14a2b+8y2z+8a2b-8y2z7t-5t2-9t-4t2-3
1675
—m-—y-—y-—m8n2+2pq+7n2+6
2727
5
—pq-3z+8pq8xy-3x2y+12xy-11xy
4
7c-3c-2c9t-4a+6t-10a
2m+4n+10m-13n+19m+19n4ab-19ab+12ab-ab
22a2b-5y2z-12a2b+6y2z7z-5z2+2z+20z2-2
1175
—m+—y-—y+—m10z2+3xy-4z2-7
2828
3
—mn+8y-7mn6xy+5x2y+8xy+21xy
2
7c-6c+3c5x-9e-3x-2e
6m+8c+17m+15c+15m+15c4xy+10xy+15xy+xy
2a2b+9b2c-20a2b-6b2c9x+9x2+5x+19x2-8
4775
—z-—t+—t+—z15t2+6pq+7t2-1
3838
3
—pq-5n-2pq6pq-17a2b+18pq+25pq
2
2f-9f+7f10t-7e-3t+5e
3a-3d+16a+11d+18a-12d6pq+6pq-18pq-pq
14a2b-3b2c+2a2b+5b2c9y-4y2-4y-13y2-7
4775
—x-—t+—t-—x12y2-6ab-8y2-4
3838
1
—ab+3x+8ab6ab-3a2b+7ab+14ab
2
3c-9c+7c4t-3c+5t-7c
7a+5c-10a-9c+19a-18c9mn-7mn+13mn-mn
2a2b+9b2c+10a2b-4b2c9m+2m2+7m-16m2+6
3175
—x+—n-—n-—x18n2+5xy+4n2+6
4646
1
—mn-7x-9mn9pq+3a2b+2pq-9pq
2
4a-2a+9a8t+2d+9t-3d
8a-4n+5a+13n+11a-17n8pq-16pq+11pq-pq
30a2b+3b2c+22a2b+3b2c4m-7m2-4m+18m2-3
1175
—x+—t+—t+—x20n2+5pq-9n2-4
3737
6
—ab-2x+7ab2pq-2a2b-18pq+18pq
7
3c-7c+8c7y+3f-8y-3f
9m+6d+14m+7d+10m+20d7pq+18pq-12pq+pq
25a2b-3b2c+8a2b+7b2c4m+4m2-5m-3m2+3
3875
—x+—y+—y+—x19z2-9mn+9z2+2
4747
1
—ab+3x-5ab6pq+3x2y-9pq-16pq
5
6f-3f+9f3m-5d+9m-4d
5a+8c-6a+3c+20a-20c9ab+2ab-18ab+ab
18a2b+6y2z-29a2b+8y2z4z+9z2-2z-14z2+2
1575
—x-—n-—n+—x18x2-9xy-5x2-4
5656
1
—ab-3y+8ab4pq+14x2y-4pq+11pq
8
3f-3f+5f10m-6e+3m+9e
7m+7c-9m-3c+12m+11c5xy-13xy-15xy+xy
8x2y+7b2c-11x2y+3b2c6t-4t2+9t-12t2+3
1875
—x-—t-—t+—x10x2-5ab+7x2-3
3737
1
—pq+5m-7pq3ab-18a2b+11ab-5ab
8
8a-3a+8a6m-2c-9m-8c
2b+5c+9b+20c-14b-14c3pq+7pq-18pq-pq
13x2y-2y2z-8x2y-4y2z3t-7t2-4t+6t2-8
1175
—m+—n+—n+—m13z2+7pq+4z2-8
5757
6
—pq-3n-2pq8mn-18a2b+8mn-9mn
5
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