document.write( "Question 1073910: How do I solve the equation 1/R = 1/r1 + 1/r2 for r2? \n" ); document.write( "

Algebra.Com's Answer #688670 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"1%2FR=1%2Fr%5B1%5D%2B1%2Fr%5B2%5D\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"1%2Fr%5B2%5D=1%2FR-1%2Fr%5B1%5D\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"r%5B2%5D=1%2F%281%2FR-1%2Fr%5B1%5D%29\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".\r
\n" ); document.write( "\n" ); document.write( " $\"r%5B2%5D=%28R%2Ar%5B1%5D%29%2F%28r%5B1%5D-R%29\"$ \n" ); document.write( "

\n" );