求这道题的过程!!!!
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原式=(1/(X-3)-(X+1)/[(X+1)(X-1)])*(X-3)
=(1/(x-3)-1/(x-1))(x-3)
={2/[(x-1)(x-3)]}*(x-3)
=2/(x-1)
=(1/(x-3)-1/(x-1))(x-3)
={2/[(x-1)(x-3)]}*(x-3)
=2/(x-1)
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