初一数学上册合并同类项专项练习题13.docx
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初一数学上册合并同类项专项练习题13
5f+6f+4f6x-5d-4x+2d
2m+7c-6m+7c+11m+10c7xy-3xy-19xy+xy
10a2b-4b2c-20a2b+2b2c2t+4t2-8t-8t2-5
6175
—x+—t-—t+—x14z2+8mn-8z2+4
5656
5
—ab+7t+7ab3ab-6a2b+17ab-11ab
4
4a+7a+9a6m+3d+3m+8d
3a-5n-9a-8n-12a+18n3xy-11xy+15xy+xy
8x2y-5y2z+2x2y-4y2z4z+5z2+4z+4z2+6
1675
—x+—y+—y+—x6y2-6mn+7y2+5
5757
7
—ab-3n+4ab6mn-20x2y-9mn+7mn
8
2d-7d-5d9x-4b-3x-6b
9b-5c-14b+9c-12b+13c7pq-20pq+13pq+pq
10a2b-2b2c-10a2b+3b2c7y+4y2+2y+15y2+3
5175
—z-—y+—y+—z12t2+2ab-9t2-3
4646
1
—ab+3z+9ab7mn-2x2y-3mn+23mn
5
5a-9a+3a5z-4f-7z+7f
6b-4n-16b-5n-18b-20n7xy-12xy-15xy-xy
19a2b+7y2z-30a2b-9y2z7t-2t2-5t-15t2+2
1175
—x+—t+—t+—x5m2-3mn-6m2+6
2828
1
—pq+9m+3pq6mn-10a2b+16mn-24mn
8
6b-8b-6b8x+5e-7x-4e
5m+3c+19m+16c-14m+20c6xy+12xy-16xy+xy
17a2b+6b2c-16a2b+3b2c3x+5x2-3x+15x2-2
3175
—m+—y-—y-—m11z2-6pq-7z2-4
2828
1
—mn-3x-4mn7ab-4x2y-13ab-30ab
4
8d-8d+3d10y-4c-5y+9c
6a-5n+9a+16n-13a-18n4ab-13ab-10ab-ab
6a2b+5b2c+8a2b+2b2c7x-9x2+6x-12x2-3
3175
—m-—n-—n-—m16x2+4xy-6x2+4
4747
1
—pq+3n+5pq6ab+12x2y+14ab-12ab
2
7c+3c+4c5z-6b-6z+2b
3m+9c-14m+17c-16m-11c6pq-4pq-11pq+pq
7x2y-9y2z+9x2y-2y2z7m+4m2-3m+14m2-1
2175
—m-—n+—n+—m15t2+3pq-3t2-3
3838
1
—xy-2t-4xy7pq-16x2y+18pq-2pq
8
9e+6e-6e9n-4b+5n+4b
9m-8n+4m-20n-10m-18n6pq-13pq+14pq+pq
10x2y-4y2z-22x2y+9y2z7z-2z2+5z-8z2+2
4175
—z+—y-—y-—z13z2-5ab-9z2+5
5858
1
—pq+6y+7pq2xy-8a2b+4xy-3xy
4
3c+9c+6c9n+2b+2n-2b
8m-9d-5m+10d-20m-13d7xy-2xy-13xy+xy
20x2y-2y2z+7x2y-2y2z6t-3t2-3t-5t2+7
1175
—m-—n+—n-—m7y2+8xy+5y2-2
2828
1
—xy-3y-6xy2pq-6x2y-18pq-9pq
5
2f+7f+6f10z-6b-5z+8b
8a-3n+17a-10n-16a-15n8ab+7ab+11ab+ab
16x2y-2y2z+24x2y+9y2z8m+6m2+9m-11m2+2
4175
—m-—y+—y+—m15y2+8mn-9y2+8
3636
1
—ab-2z+6ab6ab+20x2y-10ab-20ab
6
8c-6c-7c5x+6c+2x-5c
8a+8d-4a-3d+16a+15d7pq-20pq-11pq-pq
2a2b-2y2z-7a2b+2y2z8x+4x2-6x+6x2-8
2175
—z+—y+—y-—z17x2-9xy-9x2-9
3636
9
—pq+5y+3pq2xy-13a2b-9xy-14xy
8
5c-4c-6c3t-9d-3t-3d
6a-8n-12a+9n+19a+12n4xy-2xy-19xy-xy
10x2y-5y2z-27x2y-8y2z3n-4n2+2n-14n2+3
6775
—x-—n-—n+—x11m2+6ab-5m2+8
5858
1
—pq-8z-3pq2mn-15x2y+10mn+28mn
2