初一数学上册合并同类项专项练习题16.docx
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初一数学上册合并同类项专项练习题16
2d-8d+2d10m-6c+5m+2c
8m-7c+11m-2c-19m-15c8xy-17xy+18xy+xy
2a2b+3y2z+4a2b-6y2z2y-3y2+6y+16y2+8
2175
—z-—n+—n+—z18n2-7pq+4n2-3
3838
1
—mn+5t+2mn5pq+13x2y-9pq+2pq
3
2d+3d+9d2t+2b+8t+3b
7a+3d+18a+20d-16a-16d6mn+2mn+13mn-mn
25a2b-9b2c+21a2b-3b2c7n-6n2+5n+5n2+5
5175
—z+—y-—y-—z5x2+2mn+9x2-5
4747
1
—pq-8y+3pq4pq+3a2b+11pq+8pq
6
6e+2e-8e6t+4e+6t+5e
6b+2n-3b+5n-20b+15n2mn+10mn+10mn+mn
27a2b+5b2c+13a2b-8b2c3z-9z2-6z-15z2-9
1975
—z+—n+—n-—z9t2+3ab+9t2-7
5858
1
—xy+9t-3xy8ab-11x2y-9ab+17ab
2
9f+9f+4f2t-5c+3t+9c
2a-2c-5a+12c-16a-14c7mn-17mn-19mn+mn
12a2b-7y2z-29a2b+5y2z3x-6x2+8x-6x2+2
4875
—x-—y-—y+—x9x2-2pq+5x2-8
3737
1
—pq-2z+3pq4mn+14a2b-18mn+27mn
6
9e+8e-7e4z+4c-2z-6c
6b-8d+10b-20d-17b-10d5ab+4ab-13ab+ab
22a2b-6b2c+30a2b-7b2c5z-8z2-7z-12z2-1
1175
—x+—t-—t-—x4m2+4mn-2m2+1
3737
5
—xy-9t+9xy4pq+3x2y+11pq+14pq
6
2b-5b-7b10z-6f+7z+9f
3m+5n+11m-19n-15m+20n9mn+20mn-14mn-mn
12a2b-9y2z+30a2b+2y2z4t+5t2-5t+9t2-8
4175
—m+—n+—n-—m14m2+6mn+5m2-6
3636
1
—pq-2t+6pq2ab-2a2b-20ab+12ab
4
4c-7c-9c9z+2c+4z-2c
5a-6d-11a+6d-12a-15d8mn+7mn-11mn+mn
18x2y-6b2c-30x2y-3b2c9x-9x2-5x-12x2-6
3675
—x-—y+—y-—x15z2-8pq-7z2+3
4747
1
—ab-9t+6ab6ab+7x2y-13ab+7ab
5
7d-7d-5d5n+9b+7n+4b
9a+5d-9a-20d-12a+13d7xy+8xy-13xy+xy
16a2b+2y2z-11a2b+2y2z7z-3z2+3z-18z2+9
5175
—x-—n+—n-—x13t2-2pq-7t2+8
4848
5
—ab+2z-9ab4xy-2a2b+15xy-26xy
6
9b+3b+6b2t+2c+7t+9c
4b+7n-18b-14n+15b-19n5xy-13xy-14xy-xy
15a2b+5b2c-6a2b+2b2c8x+4x2-6x+18x2+1
1675
—z-—n+—n-—z4x2-8pq+2x2+4
4747
3
—ab+3m+2ab7ab+5x2y+18ab-17ab
2
7a+3a+4a9z+9d+2z+2d
7a-9n+12a+6n-13a+15n7pq+4pq-13pq+pq
16x2y+6b2c+24x2y-7b2c9n+5n2+4n+7n2-3
1875
—z+—y+—y+—z6m2-3ab+4m2-7
5757
7
—pq-7n-2pq5mn+16a2b-4mn-2mn
8
8c-6c-2c7x+7a-2x+8a
8b+4n+20b+14n-16b+15n2xy+11xy-20xy+xy
10x2y+8y2z+21x2y-5y2z4n+6n2-8n+4n2+9
5675
—m+—n-—n+—m14n2+7mn+9n2+5
4747
2
—mn-8n+8mn3pq+18x2y+3pq+14pq
3
3f+9f+8f3n+8b+3n+7b
7a+6n-11a+16n-11a+18n2mn+14mn-13mn+mn
27x2y+4y2z+23x2y+7y2z3t-6t2-5t-15t2+6
6575
—x-—t-—t+—x14t2+4xy-7t2-7
5656
7
—pq+5n+9pq6mn-5x2y-20mn-8mn
8