合并同类项综合练习题112.docx
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合并同类项综合练习题112
9b+8b+4b7x-5e+6x+2e
9b-9d-10b-10d-12b+20d7ab-10ab+10ab-ab
9a2b-9y2z-11a2b+3y2z2n-2n2-8n-4n2-5
4175
—m+—y+—y-—m6n2+3ab+2n2+8
5858
7
—pq+2y+2pq6pq+4x2y-3pq+24pq
8
7c+7c-4c2n+3a+5n+7a
4a-8c+19a+19c+12a-20c9ab+12ab+17ab-ab
26x2y-3y2z+16x2y+9y2z4t+5t2-2t+15t2-6
1175
—x+—n-—n-—x19t2+3ab+6t2+7
4747
1
—mn-6z-6mn6mn+2x2y+9mn+26mn
4
4f+8f+8f6z-5d-8z+8d
9a+3d+13a+6d+20a-13d3xy-2xy+14xy+xy
22x2y-9b2c-14x2y-5b2c4n-9n2-4n-13n2+5
6175
—m-—t+—t+—m3z2+3pq-8z2-4
5757
1
—mn+2m+9mn6ab+4a2b-9ab+5ab
3
4a-8a+6a2z+6f+3z+7f
6b+3n-8b+8n-18b-20n7xy+8xy-17xy+xy
22a2b+7y2z+18a2b+6y2z3y-5y2-5y-7y2-3
5775
—m-—n+—n+—m9m2+2ab-5m2+8
4848
8
—xy+5t+7xy5pq+8x2y-3pq+29pq
7
2b+7b+8b5y-5c-2y-10c
4a+7n+9a+20n+11a-19n6ab+11ab+13ab+ab
17x2y+9b2c-4x2y-4b2c7x-7x2-3x-18x2-1
3775
—x-—n-—n+—x15t2+5mn-5t2-3
4646
5
—mn+9z+3mn3mn+5x2y+14mn-17mn
4
7e+9e+5e4m+8e+3m-6e
3b+6n+11b-11n+19b-14n4xy+3xy-20xy-xy
5a2b-4b2c-29a2b+7b2c8t+8t2+3t-8t2+4
1975
—x-—y-—y-—x12y2-2mn+9y2-6
3838
1
—pq-2y-3pq3mn-7a2b-12mn+26mn
5
4c+7c-6c4y+4b-5y-10b
8b-9n-5b-13n+19b+12n8xy-18xy+19xy+xy
15a2b-9y2z-24a2b-4y2z2m+8m2+2m-7m2-4
2775
—x-—t+—t+—x6z2-7pq-4z2+9
3636
1
—pq+9x+6pq5mn+14x2y-17mn+7mn
8
6d-8d+7d5y+9c-6y+9c
7m+6d+8m+8d-13m+13d4mn+10mn+20mn-mn
29a2b-5b2c+9a2b-9b2c4y-5y2+6y+2y2-7
3175
—x+—n+—n+—x11y2+3mn+9y2-8
4646
1
—ab-2x-7ab4xy-19x2y-4xy-19xy
5
4f-5f-2f3y+8f+9y+6f
5a-3d-13a-3d+20a+16d8mn-16mn+11mn-mn
4a2b+4b2c-17a2b+8b2c2n+3n2-7n-11n2+3
5175
—x-—t+—t+—x17n2-7pq-7n2-2
4646
1
—mn-8m-3mn7mn-19x2y-5mn+7mn
6
4c-2c-8c10t-4c+8t-7c
8m+3d+19m-18d-19m+11d7ab+19ab-17ab+ab
11x2y-6b2c+13x2y+9b2c8t+4t2-3t+5t2-2
1175
—x+—n-—n-—x16t2-5xy-5t2-8
2828
1
—mn+6z+7mn5xy+8x2y-8xy-6xy
6