初一数学上册合并同类项专项练习题25.docx
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初一数学上册合并同类项专项练习题25
9c+7c-5c4y-9a+9y+4a
8a-5n+13a+6n-10a+11n4pq+17pq+10pq+pq
16a2b+9y2z+13a2b-6y2z3t-2t2+9t+12t2+2
5675
—x-—y-—y+—x7y2-8pq+2y2+6
4747
1
—pq+8z+3pq6mn+19x2y-2mn-26mn
8
4e-5e-3e5t-3b+8t-3b
4m+6c-11m-5c-10m-15c2ab+18ab+11ab+ab
3x2y+3b2c-29x2y+7b2c4y+2y2-4y+6y2+9
1875
—m-—t-—t-—m20x2+7pq+3x2+7
2727
1
—xy-4m+8xy9pq+16a2b-15pq+15pq
4
3b+9b-3b6m-3a-9m+5a
5a+4d+10a-15d-14a-16d3ab+10ab-19ab+ab
6a2b+9y2z+7a2b+4y2z9y-2y2+9y+15y2-6
4775
—m-—t-—t+—m7z2-5ab+5z2+7
3636
4
—ab-9m-3ab5pq-2x2y-17pq-26pq
3
5f-2f-4f7n-5d+3n+7d
7b-6c-16b-2c-18b+16c3mn-20mn-10mn-mn
26x2y+7y2z-15x2y+9y2z5m-5m2-9m+9m2+6
3575
—x+—y+—y-—x20n2-6ab+6n2+6
4646
1
—mn+5t+5mn9xy-16x2y-4xy-10xy
4
7b-4b-7b4t-7c+2t+5c
2b+5n+6b-10n+20b+10n2ab+4ab+20ab-ab
17a2b+4y2z+24a2b+5y2z5n-2n2-7n-16n2-4
1175
—z+—t-—t-—z12t2-3mn-4t2+1
2626
1
—pq+5m+2pq4pq-18x2y-9pq-6pq
4
3d-5d-5d10t+8e+7t+9e
7m+8d+5m+20d+14m+10d2xy-5xy-18xy-xy
3a2b-4b2c-3a2b-8b2c9y-7y2-4y+18y2+5
1675
—x+—t+—t+—x5t2+8xy+2t2+2
3737
1
—pq-5z-5pq7xy+3x2y+4xy+26xy
7
8e+8e+6e7m-5a-4m-7a
9m-5c-13m-4c+17m-10c9pq+12pq-19pq+pq
20a2b+4b2c+27a2b+7b2c7x-8x2-4x+18x2-8
1175
—z-—t-—t+—z12z2-7pq-5z2-5
2828
3
—mn-4z-5mn9xy+13x2y-13xy-13xy
2
6e+2e+7e2x-7c+7x+7c
2a-3d+17a-11d-15a+20d3ab+4ab+14ab+ab
20x2y-6b2c-14x2y-3b2c9m+4m2+8m+15m2-8
3175
—z-—n-—n+—z16n2+3xy+3n2-6
4747
3
—pq-4t+6pq8xy+9a2b+17xy+11xy
4
4d-5d+5d5z-4d+5z-8d
4b-4d+4b-17d+15b+19d9mn-16mn-14mn-mn
22a2b-4b2c-21a2b-6b2c3t+8t2+4t-15t2+2
1175
—m+—t-—t-—m8x2-2pq-8x2+9
4747
1
—mn+3y-9mn6xy-15a2b-20xy-9xy
4
7b+5b+4b6m+6d-8m-7d
6a-7d-19a-5d-11a+11d6ab-19ab-16ab+ab
15x2y-2y2z+7x2y-8y2z7n-6n2+9n-7n2-2
6975
—z+—y+—y+—z8m2+8mn-6m2-3
5858
1
—mn-2y+9mn7ab-4a2b+5ab+13ab
8
2b-7b+2b4y-3b+5y+9b
7a+5d-16a+5d+20a-19d5xy-14xy+20xy-xy
27x2y+3b2c+28x2y-5b2c7y-9y2+2y+17y2-6
4775
—m-—t+—t+—m19x2-8mn+9x2-3
5656
1
—ab+6n+3ab4pq-8x2y-20pq-5pq
4
4e+2e+5e7y+5e+3y+9e
5b+2n+10b+20n+10b-10n5ab+20ab+19ab-ab
20a2b-4b2c+20a2b+7b2c7m+2m2+2m-5m2-7
3175
—x-—t+—t+—x2t2-8pq+2t2-6
4646
6
—mn-7t-6mn7mn-10x2y-18mn-7mn
5