合并同类项综合练习题54.docx
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合并同类项综合练习题54
2b-3b-9b4x-9e-5x+9e
5a-7d-6a+16d+13a+17d5ab-12ab+16ab-ab
21x2y+2b2c-27x2y+4b2c7m+6m2-6m-11m2+2
3775
—m+—n-—n+—m19t2+8ab-5t2+2
4848
1
—ab-2y+4ab6mn+14a2b-8mn-26mn
8
6e+9e+5e4z-5d+5z+5d
2m+9n+13m-19n-17m-17n5ab-11ab-15ab-ab
26a2b+5b2c+3a2b-4b2c5m-9m2-8m+17m2+8
4775
—x+—y-—y-—x10x2+9xy-5x2-3
3838
3
—mn-4x-5mn2ab+15a2b+3ab-24ab
2
3f+3f-2f7n-7e+2n-2e
5m-2c-8m+14c-13m-14c7ab+17ab+12ab+ab
15x2y+2b2c+14x2y-8b2c4t-4t2-6t-4t2-2
1175
—m-—y+—y+—m7y2-5ab+7y2+7
5858
1
—ab+9y+5ab6mn+9x2y+9mn+7mn
2
9a-6a-2a7y+3b-9y+2b
3b-2d+13b-10d-16b+13d8mn+15mn-20mn-mn
4a2b-4y2z-7a2b+3y2z6y+9y2+6y-2y2-7
3175
—z+—t+—t+—z6t2+4pq-7t2+2
2727
6
—ab+3y+3ab7ab-11a2b+14ab-13ab
7
4f+3f-5f6m-4e-8m+5e
9m+3c-6m-13c-20m+11c9xy-4xy-11xy-xy
20x2y+7b2c-13x2y-6b2c3n+5n2-8n+12n2+2
1675
—z-—y-—y+—z8m2-3ab-6m2+3
5757
1
—ab+5z-5ab2ab+3x2y+7ab+7ab
8
9e-9e+9e6y+4b+8y+3b
7m+4n+20m-19n+10m+20n3mn+19mn+12mn+mn
3x2y-6b2c-21x2y+4b2c4z-9z2-9z+4z2+2
4675
—z-—t+—t+—z6y2+4xy+8y2+3
3737
4
—mn-2y-5mn6xy+3x2y+10xy-22xy
3
5a+6a-2a8y-4e+4y-7e
7a-4d-6a+18d+11a-15d2ab+18ab+13ab-ab
30x2y-3y2z-23x2y-3y2z5t+6t2+6t+5t2-7
1775
—z-—t-—t-—z15t2-2pq-2t2-8
2626
8
—pq-3n+7pq5pq-16x2y+19pq-13pq
7
4c+6c-5c7t+5b-5t-6b
2m-7d+17m+12d-15m-20d2mn-14mn+11mn-mn
6a2b-3y2z-11a2b+9y2z5t-8t2+5t+13t2+9
4875
—m+—t-—t+—m2z2-4pq+5z2-4
5757
1
—xy-8m-4xy7mn+10a2b+5mn-18mn
8
4a-7a+2a8z+8f+3z+9f
4a+5c-7a-19c+20a-18c5ab+14ab+18ab+ab
30a2b-3y2z-25a2b+6y2z3n-4n2-9n+19n2-8
1975
—m+—n-—n+—m17t2-6mn-7t2+2
4848
3
—mn-5m+8mn2ab-9a2b-18ab-28ab
4
8a+4a+3a8x+2c-3x-8c
4m+2n-15m+3n-20m-20n5ab+6ab-20ab+ab
6a2b-9y2z-22a2b+7y2z4n+9n2-5n-15n2+6
1175
—z+—t-—t-—z8t2+5mn+4t2+3
5656
6
—ab-5t+2ab3ab+7a2b+2ab-3ab
7