合并同类项综合练习题143.docx
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合并同类项综合练习题143.docx
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合并同类项综合练习题143
2c+3c-2c6n+2a+2n-6a
8m-4d-4m-14d+10m-19d4ab+8ab-17ab+ab
9x2y-5b2c-16x2y-3b2c5x-2x2-7x+7x2-2
1875
—m-—t-—t+—m19y2-7mn-7y2+9
4747
1
—mn+4x-6mn8pq-8x2y+11pq-28pq
2
3d-7d-9d7z+6c+8z-5c
8a+9c-12a+12c-19a-17c8ab+13ab-15ab+ab
3x2y+8y2z+17x2y-9y2z7z-8z2+9z+16z2-7
1775
—z+—y+—y-—z7n2+7xy+4n2-2
3636
1
—pq+3n-6pq3mn-3x2y-4mn-18mn
5
6d+2d-4d7m-6f+4m+10f
8m-3n+4m+14n-17m-19n4xy+10xy-20xy+xy
16x2y+2y2z+23x2y-6y2z7z-2z2+5z-8z2+9
1775
—z-—n-—n-—z17x2-7xy+7x2-3
2626
6
—pq-7x-4pq5xy-17x2y-10xy-21xy
7
6e-5e+9e4y+7f+7y-10f
6m-3d+3m-13d+16m+14d3ab-9ab+16ab+ab
25a2b+2y2z+2a2b+7y2z8z-7z2+7z+8z2-7
4975
—x-—y+—y-—x2x2-2ab+3x2+4
5858
1
—xy-5y-6xy9ab-15x2y+18ab+25ab
4
9c-3c-6c5x+8c+5x-4c
2a-5n-15a+10n-10a-17n6mn+8mn+13mn+mn
15a2b-3b2c+28a2b-6b2c7m+8m2-5m-11m2-9
3175
—z+—n+—n-—z12n2-9xy-4n2-3
2626
7
—mn-3y-3mn3pq+9a2b-18pq+10pq
6
5e-4e+4e10y-5b-7y+6b
5b+5c-8b+4c+13b-13c9pq+3pq+14pq+pq
14x2y+6y2z+25x2y+4y2z8n+9n2+8n-6n2+6
1775
—x-—y-—y-—x3m2-3mn+9m2+4
2626
1
—xy+4x+9xy8pq+8a2b-14pq-12pq
7
5d-9d+8d8n+5f+8n+6f
5m+6n+11m+20n+13m+18n9pq+4pq+10pq-pq
4x2y+2y2z+11x2y+6y2z4x-7x2+2x+12x2-3
1575
—m-—n+—n+—m7n2-5pq-9n2-7
5656
1
—mn+6m-7mn7pq-18x2y+5pq+4pq
6
8e-2e-7e5z-8e-4z-8e
8m-3d-20m+15d+17m+12d5xy-12xy+13xy-xy
14a2b+4y2z-3a2b+4y2z2y+7y2-7y+16y2+2
4175
—z+—n-—n+—z19m2+2ab+2m2+2
5858
1
—xy+8t+6xy9mn-14x2y+12mn-27mn
3
3e+9e-8e2t+9f-4t-3f
6a-3d-7a+11d-16a+12d5ab+9ab+12ab-ab
2x2y+2y2z-15x2y+7y2z4x+6x2-8x-6x2+2
3175
—x+—t-—t+—x12z2+3xy-4z2+1
4747
5
—pq-9t+2pq6xy-8x2y-14xy-6xy
6
6f-2f-6f8z-4f-5z-6f
7m-5c-10m+2c+19m+18c8ab-6ab+20ab-ab
11x2y+2b2c-24x2y+8b2c6m+5m2+3m+20m2-4
3175
—x-—t-—t+—x11x2-8ab+9x2-5
2626
1
—ab+6z-7ab2pq+18x2y-15pq+2pq
4
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