合并同类项综合练习题108.docx
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合并同类项综合练习题108
4e-3e-2e6y+2e+4y-2e
6a-6n-13a+2n-11a-18n8mn-15mn-11mn+mn
12a2b+2y2z-25a2b-7y2z4n-8n2-4n+20n2+8
1875
—x+—n-—n+—x14n2+9mn+5n2+2
3737
1
—xy+8m+2xy4ab-18a2b-16ab-6ab
8
2c-8c+3c8m+3f-5m-8f
9a+4d+6a-15d-11a-19d3pq+3pq-13pq-pq
27x2y+4b2c+12x2y-7b2c3x+7x2-9x+14x2+8
6875
—x-—n+—n-—x3x2-3ab-2x2+9
5757
5
—xy+8z+6xy6mn+20a2b+17mn+20mn
4
6f-6f+9f5y+6e+6y-9e
8b+5d+10b-16d+11b+14d5pq-16pq+10pq-pq
26a2b+9y2z-13a2b-3y2z3n-3n2-9n-15n2-3
6775
—z-—y+—y-—z13n2+3xy+6n2-5
5858
6
—xy+7n+3xy6ab-15a2b+15ab-24ab
7
7c-3c-9c7z-4e-8z-7e
3b+9n-8b+12n-11b-19n7mn-12mn-19mn-mn
30x2y-9b2c-17x2y+4b2c6m+9m2-4m-10m2+6
5575
—z+—n+—n+—z9z2-3pq-6z2+6
4646
1
—xy+7n-5xy2xy+13a2b-2xy+9xy
5
6c-6c+2c9z+7f-9z-6f
3b-6c-5b+10c-16b+13c2pq-7pq+10pq+pq
6a2b+7y2z-8a2b+8y2z2m+3m2+9m-8m2-5
1775
—x+—n-—n-—x15t2-7pq-6t2+4
5858
5
—xy+8n-8xy8ab+2x2y+9ab+7ab
4
6d+4d+8d10y-2b+6y-5b
5m-5n-3m+13n-18m+14n5pq+3pq-17pq+pq
12x2y+6y2z-16x2y-2y2z4x-9x2-4x-13x2-8
3775
—m-—n-—n+—m8m2-9pq+7m2+6
2626
1
—pq+9y-7pq5xy-3a2b+6xy+29xy
5
4e+7e-8e10n+5e-7n-3e
9a+9c-15a+9c-20a-12c3mn-11mn+12mn-mn
28a2b+7y2z-16a2b+6y2z3n-2n2+4n+7n2+5
6775
—z+—t-—t+—z17x2-4xy+9x2+5
5656
6
—pq-3y-7pq4mn-2x2y-18mn+26mn
7
4b-5b-4b4m-3d+2m-6d
8m-7d+12m-19d-13m-17d3pq-6pq+20pq+pq
4x2y+6b2c-29x2y+3b2c7n-4n2+8n+11n2+3
2875
—m+—t+—t+—m6n2+7ab+3n2+7
3737
3
—xy-5z+4xy2ab-18a2b-19ab-5ab
2
8e+8e+9e5z-7a-4z+4a
2a+3d-8a-2d-20a+13d7mn+7mn-19mn+mn
4x2y+5y2z+23x2y-8y2z4n-7n2+9n-15n2-1
1175
—m+—y-—y-—m17z2-4pq+2z2+7
2626
6
—pq+6n+8pq3pq-18x2y-9pq+4pq
5
7f+6f-7f9y-8f+6y+7f
6m+7d-9m-8d-10m-17d4mn+5mn+12mn-mn
16a2b-2y2z+15a2b-9y2z6t-8t2+9t+19t2-9
3675
—m+—t+—t-—m10x2+3pq-6x2+6
2727
8
—mn-4n+8mn6xy+12a2b+15xy-12xy
7