document.write( "Question 811098: How do I make 'b' the subject in this formula 1/r = 1/a + 1/b thank you! \n" ); document.write( "
Algebra.Com's Answer #501617 by tommyt3rd(5050)\"\" \"About 
You can put this solution on YOUR website!
\"1%2Fr+-1%2Fa=+1%2Fa-1%2Fa+%2B+1%2Fb\"\r
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\n" ); document.write( "\n" ); document.write( "\"%0D%0A%28a-r%29%2F%28ab%29=1%2Fb%0D%0A\"\r
\n" ); document.write( "\n" ); document.write( "\"b=%28ab%29%2F%28a-r%29\"
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