合并同类项综合练习题139.docx

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合并同类项综合练习题139.docx

合并同类项综合练习题139

8e+7e+5e6n-4d+7n+9d

7m+2n+17m+7n-16m-10n4xy-19xy+14xy+xy

25a2b+3y2z-15a2b+8y2z5t+6t2+6t+14t2+2

4775

—m+—y-—y+—m9z2-4mn+7z2-2

3636

1

—ab-4z-7ab2mn+4x2y-20mn+19mn

2

5d-6d+3d6t-9b-7t-8b

4a-2c+15a+19c-16a-18c7xy+5xy-16xy-xy

20x2y-5y2z+27x2y+4y2z7y-6y2+9y-13y2-5

1975

—m+—t-—t-—m7m2+8mn-9m2+4

5858

1

—pq-5n+9pq6ab-10x2y+17ab-6ab

5

6e-4e-5e9y+4b-5y-8b

8a-8n+8a-13n+14a-11n6pq-17pq-20pq+pq

25x2y+2b2c+3x2y-8b2c8z-3z2+4z+10z2+9

1775

—m+—t-—t+—m6y2-5xy+3y2-6

2626

7

—mn-9n-7mn9xy-12x2y-4xy+21xy

8

2f+4f+3f10t-6f+7t+2f

6m+3c+6m-11c+13m+10c8xy+3xy+16xy-xy

9a2b-8y2z-2a2b+6y2z7y-6y2+2y+3y2+5

1675

—z+—t-—t-—z19n2+4ab+4n2-3

2727

4

—mn-7z-6mn4mn-15a2b+19mn-21mn

3

2e+8e+4e6n+9c+5n-2c

9m+3n-3m+16n-15m-10n4mn+13mn+17mn+mn

14x2y-5b2c-14x2y+6b2c5n-2n2+9n+16n2+7

1875

—x-—y+—y+—x5n2-4xy-6n2+1

2727

1

—ab-6m-8ab4mn-11x2y+19mn+18mn

6

2a-5a-3a9t-2b+3t+9b

9a+5n-4a+4n-12a-12n5ab-3ab+18ab+ab

11x2y-4y2z-27x2y-5y2z4t+4t2-8t+12t2-6

4675

—m-—n+—n-—m16n2-5xy+6n2+5

3737

9

—ab-5z-7ab9pq-6x2y+15pq-9pq

8

4d-6d+7d6t+4f-4t-8f

6a+6n+10a+9n-14a+17n5pq-6pq-18pq+pq

25x2y-2y2z-10x2y+7y2z7x+2x2-5x-16x2+3

3175

—x+—n-—n+—x18n2-9pq-2n2+2

2727

1

—pq+8z-2pq7xy+18a2b-20xy+18xy

4

7a+9a-3a10m+8c-6m+5c

8m-7n+10m-9n+13m+14n6pq+2pq-18pq+pq

21a2b-7b2c+2a2b-3b2c2m+4m2-4m-8m2+3

1175

—m+—n-—n+—m7n2-8xy-7n2+1

5858

5

—ab-7m-4ab7pq-4x2y-19pq+23pq

4

3e-6e-8e6t+3e-5t+2e

5b+6d-18b+16d+11b+18d3mn-7mn+16mn-mn

10a2b-7y2z+3a2b-3y2z4x-9x2+2x-20x2-3

5675

—m+—n-—n+—m20z2-8pq-4z2+6

4747

1

—pq+5n+3pq6pq+5x2y+7pq-12pq

6

8e-4e+5e9n-3b-9n-3b

8b+3c+20b-14c+10b+16c2ab-2ab+18ab-ab

7a2b+6y2z-23a2b+7y2z7z+5z2+2z-16z2+9

1175

—x+—y-—y-—x10m2+5ab-3m2+9

5656

1

—pq-3n-8pq5mn-14a2b+4mn-6mn

5

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