初一数学上册合并同类项专项练习题43.docx
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初一数学上册合并同类项专项练习题43
7d-7d-6d10t+8e+8t+8e
8b-7d-19b-17d-15b+12d2xy+17xy+17xy+xy
21a2b-6b2c-13a2b+2b2c7t-5t2-7t-4t2+9
3875
—m+—t+—t-—m6t2+9xy-9t2+6
4747
4
—mn+8z-9mn9xy+13a2b-7xy-28xy
3
9f+5f+4f5x+5d-4x-7d
8a-4d-12a+15d+19a-19d8xy-12xy+12xy+xy
23a2b-9y2z-24a2b-9y2z2z-4z2-7z+5z2+5
1975
—z-—t+—t-—z6z2+4mn-2z2-2
4848
1
—pq+5z+9pq2mn+5a2b+14mn+29mn
3
9c+9c-9c2n-2d-6n+9d
2b-6c-5b+2c-11b-20c5mn+11mn+20mn-mn
24a2b+8b2c-10a2b+3b2c8t+2t2-5t+9t2+1
4175
—z-—t+—t+—z12t2-6xy-4t2+7
3838
8
—pq-6t+6pq9ab+14x2y+20ab-21ab
7
7d+7d+9d2y+6b+9y-3b
4m+7c+7m-19c+13m+14c6ab-7ab+14ab+ab
7a2b+9y2z-26a2b+2y2z5m+7m2-3m+13m2-6
3675
—z-—t+—t-—z8x2+8mn-6x2-2
2727
5
—mn+5y-4mn3pq-15x2y-5pq+20pq
6
8d+6d-6d2m-6b-6m-9b
9b+2n+2b+5n-14b-19n9ab+3ab-17ab+ab
2a2b+8y2z+14a2b-8y2z7n-6n2-7n-19n2+8
3575
—m+—n+—n+—m17y2-7ab+8y2-7
2626
6
—pq-8z+4pq8pq-4a2b+18pq+11pq
5
4e-6e-2e5y+3d+6y+3d
4b+6d-15b+14d-14b-19d8mn-17mn+10mn+mn
26a2b+9y2z+13a2b-4y2z6x+5x2+3x-3x2-6
1175
—x-—t-—t-—x5z2-4pq+3z2-1
3737
1
—ab+8z-7ab3ab-10a2b+13ab+5ab
2
6b+6b-7b8x+2b-5x-9b
4a-5n+5a+12n-10a+10n8xy+2xy-12xy-xy
9a2b-3y2z-6a2b+4y2z7n-5n2-3n+18n2-7
5675
—z-—y+—y+—z7t2+4pq-3t2+2
4747
9
—pq-2y-6pq3ab-18a2b-15ab+27ab
8
4c+4c-6c6m-8f-3m-6f
2m-9d+6m+4d+19m-15d7mn+5mn-15mn-mn
28x2y-4b2c+25x2y-3b2c2y-9y2+2y-3y2+7
3775
—x+—n-—n-—x7z2+2pq-7z2-4
2626
8
—pq-8x-5pq9mn-6x2y+4mn+30mn
7
3c-5c-3c5m+2e+8m+5e
6a+2d+20a-20d+20a-19d8ab+20ab-19ab-ab
18a2b+4y2z-29a2b-3y2z9n+3n2-5n+19n2+9
3675
—m+—y-—y-—m15x2-8pq-3x2+8
4747
1
—mn+9m+7mn7mn+15x2y+17mn-22mn
4
7f+3f-2f8x+5e+7x+10e
7a-6c+6a-16c+15a-14c6mn-15mn+13mn-mn
22x2y+3b2c+17x2y+8b2c8t+8t2+6t-6t2+7
3175
—x+—t-—t+—x8n2+2xy-8n2-2
4646
5
—ab-8m-3ab6xy-17a2b+9xy+12xy
6
3f+7f-6f10m-8d-8m+10d
8m-6d+8m-20d+19m-10d4mn+4mn+17mn-mn
27a2b-4b2c+10a2b+6b2c3y-8y2-7y+14y2-1
1975
—m-—y-—y-—m20z2-3ab-4z2+5
3838
1
—pq-6m-4pq7xy-17a2b+3xy+27xy
4
6b-5b-8b9n-3f-8n-3f
5b+8d-11b+14d-10b-14d4ab-13ab+14ab-ab
5a2b+3y2z-20a2b+6y2z9x-3x2+6x-19x2+9
1175
—x-—y+—y+—x5y2-5mn-9y2+1
3636
1
—xy-4m+7xy9mn+7x2y+11mn-4mn
2