合并同类项综合练习题22.docx
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合并同类项综合练习题22.docx
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合并同类项综合练习题22
8a-7a-4a3m-2d+8m+7d
9m+6d+15m+17d-20m-11d5xy-18xy+18xy-xy
30a2b+5b2c-15a2b+4b2c9x+6x2-4x-18x2-1
3775
—x+—n-—n-—x20m2+6pq-7m2-8
2626
1
—xy+3x-8xy5pq+3a2b-14pq-11pq
3
4a+9a-9a9n+9e+2n+8e
7m-6c+12m-15c-20m+15c9pq+17pq+15pq-pq
4a2b+2b2c+20a2b-5b2c5z+4z2-5z+19z2+3
3175
—m-—n-—n+—m3n2+4pq-5n2-9
2828
1
—pq+5y-9pq2pq-3x2y-11pq+5pq
4
3e-3e-4e5m-9c+4m+2c
7b-3c-17b+3c-16b+13c8ab+7ab-12ab+ab
21a2b-8y2z-24a2b+5y2z9y-4y2-8y-2y2+6
1775
—x-—n-—n+—x18z2-6mn+5z2+7
3636
7
—pq+5m+6pq5xy-13x2y-8xy-21xy
6
9f-3f+8f5z+3f-4z-6f
4a-2d+4a+5d+12a+15d3mn-20mn-18mn+mn
21x2y-8b2c-8x2y-9b2c3t+5t2-6t-17t2-8
1775
—z-—n+—n-—z10z2+9mn+8z2+3
5656
1
—ab+9m-7ab4pq+7a2b-13pq+24pq
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3c+4c-5c4n-8a-7n-4a
7a+2n-7a-20n-17a+18n3xy+12xy-17xy-xy
15a2b+2y2z+8a2b+8y2z9m+7m2+2m-11m2+8
6175
—z-—y+—y+—z4n2+8ab-8n2+5
5858
1
—pq+6x-6pq5mn-7a2b-9mn-24mn
7
2e+4e+5e3x+5f-9x-10f
4m+8n+4m+7n-16m+17n5pq+7pq-16pq-pq
18a2b-2b2c+12a2b+4b2c2t+5t2+6t-10t2-1
1775
—z-—n+—n+—z10n2+2pq-8n2+3
2828
5
—pq+4y+5pq5pq+9x2y+11pq+19pq
6
2e+4e-3e8x+2c+5x+2c
5b-9n+11b+19n+18b-16n6pq-9pq-16pq-pq
26x2y-4y2z-11x2y-9y2z2t+6t2-5t+10t2-7
6775
—x+—y-—y-—x9z2-2ab+7z2+7
5656
4
—pq-5x+8pq5xy-8a2b-7xy+28xy
5
2c-4c-8c6z-5b+2z-9b
8a+7n-5a+14n-10a-12n5mn-5mn+19mn-mn
15a2b-2y2z-28a2b+6y2z3n+4n2+8n-6n2+3
3175
—z-—t+—t+—z18x2+8pq-4x2-6
4848
1
—xy-5z+6xy4xy-19x2y+17xy-8xy
3
2e-5e-3e5t+9e+9t-2e
6b-9n+8b+8n-17b-12n6ab-20ab+14ab-ab
7a2b-5y2z+4a2b+5y2z4n-5n2+8n-2n2-8
1875
—x-—y+—y+—x2n2+6xy-7n2+7
3737
1
—xy-7n+3xy3xy-6a2b-18xy-8xy
2
5c+3c-3c6n-4f-5n-4f
5b+4d-17b+17d+10b+17d3pq+17pq-20pq+pq
12x2y-7b2c+17x2y+8b2c9y-3y2+9y-13y2+4
1975
—m+—n-—n-—m8y2+3pq+7y2+1
5858
1
—xy+8z+9xy9xy+15a2b+17xy-19xy
8
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