合并同类项综合练习题109.docx
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合并同类项综合练习题109.docx
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合并同类项综合练习题109
5f+8f+7f8x-9a+8x-3a
2b+6n+14b-6n+13b-17n5pq-18pq+19pq+pq
4x2y-7b2c-17x2y-8b2c9x-8x2+3x-8x2+6
4575
—m+—y+—y+—m13n2+9ab+8n2+8
3636
1
—mn+8x-4mn8xy+2x2y+5xy+8xy
8
4e-2e+2e9y-3f-4y+6f
6b+7c+6b-9c+11b-20c7mn+7mn+14mn-mn
11a2b-8y2z-24a2b-5y2z6x+9x2+8x-20x2+1
1975
—z-—y-—y+—z5t2+4pq-3t2-3
2828
6
—mn+7z-4mn7pq+15a2b-16pq+9pq
7
9a+2a-9a2z-2d+9z+2d
9m+3c+9m+3c-14m-11c7xy+16xy-12xy-xy
29x2y-4y2z+23x2y-7y2z4z+2z2+6z-7z2-8
6575
—x+—n-—n-—x8t2+5mn+5t2+3
5656
9
—xy+3x+7xy3ab+2x2y+10ab+22ab
8
5a+5a-8a2t+4d-5t+4d
6a+8n+13a+15n+20a-17n2ab+17ab-15ab+ab
10a2b-9b2c-25a2b+8b2c6y-5y2-3y+15y2+6
1775
—x+—y-—y+—x19z2-2ab+2z2+4
2626
3
—xy-3z+5xy2ab+20x2y-20ab-8ab
4
5e+8e+8e3t+4c+9t-5c
8m+2d+16m+8d-18m+11d7ab-10ab-16ab-ab
28a2b+5y2z+22a2b-5y2z4m+4m2+8m-14m2-4
1775
—x-—y+—y-—x17y2-6pq-3y2-3
2828
1
—mn-3y+4mn7pq+17a2b+14pq-18pq
2
7e-9e-8e9n+5c-6n+5c
6m+8n-18m-13n+16m+10n8ab+2ab+14ab-ab
5a2b+9b2c-4a2b+4b2c3n-9n2+8n-4n2+4
2875
—m+—t-—t-—m17n2-7pq+9n2+7
3737
1
—pq-3x-5pq3xy+11x2y+14xy-14xy
6
5c+4c-2c6y-2c+9y+8c
3m-4c-4m-19c-15m+13c9ab+11ab+14ab+ab
29a2b+7y2z+20a2b+6y2z9m-9m2+6m-8m2+5
1175
—z-—y-—y-—z16t2+2xy+7t2+4
3838
5
—xy-6y+6xy5mn-19a2b+16mn+23mn
4
2e+9e-9e9m+2a-6m+2a
5a+4d+17a+11d-10a+17d8mn-10mn+18mn+mn
18a2b+6y2z-4a2b-5y2z4n+5n2-4n+9n2+1
1775
—m-—y-—y+—m4z2-3pq+6z2-3
2626
4
—xy-9n-2xy4xy+15x2y-7xy-29xy
5
7e+6e+5e9y-3d-7y+7d
2m-4c+3m+14c-17m+13c7ab-7ab+19ab+ab
13a2b+3b2c+5a2b-6b2c9z-7z2-6z-19z2+2
5175
—m+—y-—y-—m7x2-4pq+2x2+7
4747
9
—pq+9x+9pq3pq+2a2b-3pq-5pq
8
6d-2d+3d8n-3e+2n+2e
3a+7c+19a-18c-11a-18c8xy+19xy+18xy-xy
14x2y+6y2z+8x2y-7y2z2n-5n2-2n-16n2+3
3675
—m+—t-—t+—m20x2-5pq+2x2+1
4747
6
—ab+4t-4ab3mn+14x2y-2mn-20mn
5
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