SOLUTION: can you help me simplify 1/9-1/x(/)9-x/9

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Question 244788: can you help me simplify
1/9-1/x(/)9-x/9
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
simplify
1/9-1/x(/)9-x/9
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= [(1/9)-(1/x)] / [9 - (x/9)]
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= [(x-9)/9x] / [(81-x)/9]
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Invert and multiply:
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= [(x-9)/9x] * [9/(81-x)]
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Cancel the common factor of "9" to get:
= [(x-9)/x] * [1/(81-x)]
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= (x-9)/[x(81-x)]
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Cheers,
Stan H.