合并同类项综合练习题7.docx
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合并同类项综合练习题7.docx
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合并同类项综合练习题7
7e+6e-4e9y-2e+6y-2e
8b+2n+5b-6n-10b-11n6pq-6pq+10pq+pq
26x2y+3y2z+25x2y+5y2z8x-6x2+3x-20x2-7
1875
—m-—y-—y+—m7m2+5pq+7m2-9
3737
8
—ab-8x-4ab8mn-6a2b+8mn+18mn
7
8b-6b-6b10n-8d-5n+4d
5a-7n+14a-8n+19a-14n6mn+9mn-16mn+mn
6a2b+8y2z-26a2b+8y2z9n-8n2+7n-18n2+5
4975
—m+—n+—n-—m5n2+9pq+7n2+5
5858
1
—ab+7n+6ab3xy+12a2b+14xy+28xy
8
3a-5a-8a8z-3b-9z-9b
9b-7d+14b+11d+14b+16d5mn-8mn-13mn-mn
13x2y-3y2z+28x2y-4y2z7z+7z2+4z+20z2+5
1875
—x+—t+—t+—x20m2-7mn-9m2-2
2727
1
—xy-6y-2xy4xy-14a2b+17xy-3xy
4
7c+4c+8c4y-6b-2y+3b
6b-8d-20b-2d+15b+18d9mn-2mn+10mn+mn
19x2y-7b2c+7x2y-7b2c3x-4x2-9x-12x2-9
1875
—m-—y+—y-—m5t2-9ab+3t2+1
2727
6
—pq-5n-5pq5ab+9a2b+5ab+7ab
7
9d+9d+4d8t-7d+6t+9d
6m-2n-6m-8n-10m+20n5ab-6ab-18ab-ab
9x2y+4b2c+9x2y-5b2c8y+4y2-9y+2y2+5
5775
—z+—n-—n-—z19m2-3mn+7m2-9
4848
5
—ab-4n+3ab6pq+11x2y+15pq+30pq
4
5b+8b-4b8z-4a-3z-5a
7a-9n-12a-13n-20a-12n8mn-20mn-13mn-mn
28a2b+5b2c-10a2b-7b2c5n-2n2-7n-10n2+9
1775
—m-—n-—n+—m4x2+7pq-6x2+1
4848
1
—xy+4z-5xy7pq+11x2y-15pq-19pq
7
8e+2e+9e3x-8f+7x+9f
5a+3c+4a+4c-20a-20c2mn+18mn-10mn-mn
27x2y+9y2z+7x2y+8y2z3t-6t2+7t+18t2-3
1975
—m+—y-—y+—m5x2-7pq-2x2+2
2828
4
—pq+4m+7pq6mn-11x2y+6mn-7mn
5
8f-8f+6f9t+9d+9t-9d
9b+8d-12b+13d-15b+20d8xy-18xy-15xy-xy
21x2y+3y2z-10x2y-2y2z7t-6t2+6t+6t2-2
5175
—m-—y+—y-—m10m2-3ab+2m2-3
4848
5
—xy+2y-7xy7ab+14x2y+9ab+4ab
4
4a+4a+2a3z-3a+6z+8a
6a-7d+20a+16d-12a+16d6pq+18pq+12pq+pq
24a2b-9y2z+16a2b-4y2z6t+5t2-4t-20t2+3
4675
—x+—y-—y+—x6x2+4ab+8x2+9
3737
4
—xy-5m-4xy6pq+12a2b-18pq-29pq
3
2e-4e-8e8t+5d+9t-10d
7b-4d-12b+5d+17b-14d5ab-16ab-20ab-ab
26a2b+9b2c-6a2b-8b2c3z-8z2-5z-5z2+6
1575
—m-—t-—t+—m11z2+4pq-5z2+5
5656
1
—pq-2m+6pq5pq-20a2b-8pq-10pq
4
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