Friday, April 4, 2014

How do I make 'b' the subject in this formula 1/r = 1/a + 1/b ?

1%2Fr+-1%2Fa=+1%2Fa-1%2Fa+%2B+1%2Fb

%0D%0A%28a-r%29%2F%28ab%29=1%2Fb%0D%0A
b=%28ab%29%2F%28a-r%29
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