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solve for a if 1/a + 1/b = 1/c

Guest Nov 18, 2017
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1/a + 1/b = 1/c

 

Subtract  1/b from both sides

 

1 /a  =  1/c  - 1 / b              get a common denominator on the right

 

1 / a  =    [ b  - c ] / bc         and we can write

 

a / 1  =  bc / [ b - c ]

 

a  =   bc / [ b - c ] 

 

 

 

cool cool cool

CPhill  Nov 18, 2017

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