特种兵痞在都市无弹窗:关于分式性质的题

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1. 0.01x+0.3 ( )
----------- = ------------
0.5y-0.01 50y-1

2. x-2 ( )
------------ = -------------
(x-4)(5-x) (x-4)(x-5)

3. abc -abc
----------------- = ----------------------
(a-b)(b-c)(c-a) (a-b)( )(a-c)

4. a + 0.75b 4a + 3b
------------- = -------------
0.5a - b ( )

5. a^3 - b^3
----------- =
a^2 - b^2 _________________

6. a^n+1 ÷ a^n-1 = ___________

7. 3 1
(- ----- a^4 b^3 c^2 ) ÷ ----- a^2 b =
2 3 ___________