合并同类项综合练习题53.docx

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合并同类项综合练习题53.docx

合并同类项综合练习题53

9f-2f+4f8y+5f-3y+7f

7a+3n-5a-16n-16a-19n6ab+4ab-17ab+ab

12x2y-3y2z-8x2y+5y2z6m-4m2-4m+19m2+8

1975

—m+—t-—t+—m15m2-7mn-6m2-4

2828

1

—xy+9t-5xy2pq+17a2b-17pq+5pq

8

3c-8c+5c4t+3e-6t+4e

6a-2c-6a+16c-14a+13c7pq-17pq+14pq-pq

25x2y-4y2z+22x2y+2y2z8z+2z2+3z-18z2-7

3975

—m-—t+—t+—m17y2-9xy-4y2-1

4848

8

—pq-2z+7pq3ab+18a2b+10ab+7ab

7

5d+2d+3d9t-6a+7t-8a

6b-7d+10b+14d-11b+13d8pq+16pq-16pq-pq

5a2b+5y2z-14a2b-7y2z9z-2z2-9z+7z2-3

4175

—x-—n-—n+—x17z2-6mn-4z2-6

3737

2

—xy-4t-6xy3pq+18x2y-14pq+2pq

3

4b+6b-5b9n-4c-4n-3c

5b-5c+8b+7c-20b-12c4xy+14xy-17xy-xy

28a2b+8b2c+7a2b-3b2c2x-6x2-4x+19x2-8

1575

—m-—y-—y+—m13n2+7xy-4n2+3

5656

4

—ab-2t+6ab4ab+15a2b+2ab+17ab

3

9b-4b-8b5m+7a-7m+8a

6a+6n+6a+16n+13a+10n6mn+5mn+20mn-mn

4a2b+3y2z+21a2b+5y2z7t-9t2-9t-7t2-8

1975

—x+—t-—t+—x2z2-2mn+7z2-7

4848

3

—pq+9z-7pq5ab+16x2y-16ab-18ab

2

6b-7b+7b10z-9e+6z-5e

2m+9n-11m+17n+14m+10n2xy+16xy+17xy-xy

9x2y-3b2c+8x2y-4b2c3y+2y2+9y-20y2+5

1975

—x+—t+—t+—x19x2+8pq+2x2+8

2828

3

—pq-8y-5pq2mn-9x2y-15mn+4mn

2

9b+8b+3b7m+4f-4m-2f

4a+2n+8a+6n+14a-19n3ab+15ab-10ab+ab

22x2y+4y2z-25x2y-7y2z7n-3n2-6n-12n2-3

5775

—z-—y-—y-—z20m2-6pq+5m2+9

4848

1

—pq+7t+6pq4xy-17a2b+6xy-15xy

2

4f+2f+9f2x-9d+2x+4d

7a-3n+14a-14n+18a-20n8ab-5ab-15ab+ab

18x2y+8b2c+9x2y+2b2c8m+5m2-5m-9m2+6

1175

—x+—t+—t+—x5y2-8pq-2y2-1

2828

1

—mn-2y+8mn7pq-13a2b-6pq-11pq

7

3c-9c-9c9x+5f-9x+6f

9a+9c-4a-16c-18a+18c4ab+10ab-12ab-ab

19a2b-2b2c-6a2b-7b2c7z+3z2+9z+8z2+1

1675

—z+—n+—n+—z4y2+8pq+2y2-6

4747

6

—mn+2m-7mn6ab-7a2b-14ab-23ab

7

4f-2f-2f4m+4c-7m+7c

8m+8n+16m+17n+10m+10n8xy+10xy-18xy+xy

25x2y-7y2z+25x2y-5y2z3z+7z2-8z-14z2+1

3175

—m+—n+—n+—m8t2-8pq+4t2+4

4646

1

—xy-4t-9xy7xy+10a2b-19xy-25xy

8

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