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How do you find an unknown in the denominator in an equation?
 Nov 19, 2013
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First the bottom cannot be equal to zero so you have to state what the pronumeral cannot be.
Then
multiply both sides of the equation with what is on the bottom with the pronumberal. That will get it off the bottom and onto the top of the other side.
eg
5/6 = 7/(x-2)
x-2 cannot be equal to zero so x not be equal to 2

5/6 * (x-2) = 7/(x-2) * (x-2)
5(x-2) / 6 = 7
etc

If you do you fractions upright it is much easier to see.
 Nov 19, 2013

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