合并同类项综合练习题149.docx
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合并同类项综合练习题149.docx
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合并同类项综合练习题149
6c-8c+6c9t+9a+9t-8a
6b+6n+20b+9n+20b-11n3mn+7mn+18mn+mn
26x2y+4y2z+24x2y-6y2z9z-9z2+4z+12z2+8
4875
—z-—t+—t+—z19n2-8ab-9n2+8
5757
1
—mn-4t+6mn8xy-7a2b-6xy+13xy
6
6a-9a-2a10m-7c-9m-5c
3a+3n+15a+11n-10a-17n7ab+3ab+12ab-ab
10a2b+3y2z-23a2b+7y2z4z+3z2-9z+15z2-8
1875
—m+—n-—n+—m13m2-8ab+7m2+1
3737
1
—ab+6m+8ab7pq+14a2b+17pq-30pq
8
3c+4c-7c10z+4b-7z+5b
2a-2n+7a+13n+19a-14n6xy+9xy-11xy-xy
6x2y+4b2c-11x2y+5b2c5z+2z2-7z+2z2+4
1575
—m+—n-—n-—m17m2-6xy-3m2-9
5656
1
—xy+5x-4xy3mn-4x2y+3mn+4mn
4
3a+6a-2a8m+3f-3m+4f
8m+7d+8m-16d-10m-19d9mn-13mn-19mn-mn
16a2b-3y2z+13a2b-6y2z2n+2n2-3n+12n2-6
6175
—m-—t-—t-—m14n2-5mn-9n2+2
5757
1
—pq+3x-9pq4xy+19x2y-11xy-18xy
3
5a+7a+5a4m-7d+6m+4d
5a+6n-8a+15n+13a-12n4mn+2mn-16mn-mn
6x2y+7y2z-25x2y+5y2z9t+2t2+6t-17t2-1
1975
—m+—n+—n-—m4y2+7ab-2y2+3
2828
5
—mn-7n+2mn7ab-19x2y+12ab-20ab
6
7b-3b-3b6m-6e+3m+6e
6m+4n-19m+16n+11m-14n4pq-15pq+16pq+pq
6a2b+5y2z+23a2b+7y2z8m+6m2+7m-13m2+9
2175
—z-—y+—y+—z20n2+7ab-5n2-5
3636
1
—mn+5y-6mn8mn-13x2y+12mn-23mn
7
9d-6d+4d4z+4e+6z+4e
5a-6n-5a+17n+19a-17n3xy-20xy-11xy-xy
21a2b+9y2z-26a2b-2y2z5y-6y2-5y+15y2-8
1775
—z+—y-—y-—z17n2+4ab+2n2+1
4848
4
—pq+3n+9pq7pq-12x2y-19pq-16pq
5
8f-8f-7f9n+8c+9n+6c
5a-7c+15a+19c+13a+20c8ab+12ab-11ab-ab
22a2b-6b2c-3a2b-7b2c9z-5z2-5z-5z2-4
1675
—m+—n-—n+—m13x2+2xy+3x2+1
2727
6
—xy-9n+4xy9mn+18x2y-13mn+18mn
5
4b-8b-7b9m-8f-2m-3f
5m+9d+3m-20d+15m+10d9mn+19mn-13mn-mn
25x2y+3b2c-21x2y+7b2c5y+7y2-2y-7y2+7
1975
—x+—t-—t-—x18x2+9pq+8x2-4
3838
7
—ab-9n-9ab4mn+9x2y+10mn+10mn
8
6e-9e-3e9n+2d-3n-7d
3b-3n-17b+16n-20b-20n2xy-4xy-10xy+xy
2a2b-9y2z+26a2b-7y2z7t+6t2+8t+14t2-2
1175
—x-—t-—t+—x2t2+7ab-7t2-7
5858
5
—pq-4m+4pq2ab+20x2y+2ab+13ab
6
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