document.write( "Question 114486: Make u as the subject in 1/u+ 1/v = 1/f
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Algebra.Com's Answer #83301 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!
Make $\"u\"$ as the subject in \r
\n" ); document.write( "\n" ); document.write( " $\"1%2Fu%2B+1%2Fv+=+1%2Ff\"$ .........move $\"1%2Fv\"$ to the right\r
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\n" ); document.write( "\n" ); document.write( " $\"1%2Fu+=+1%2Ff+-+1%2Fv\"$ .........multiply both sides by $\"u\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%281%2Fu%29u+=+%281%2Ff+-+1%2Fv%29u\"$ .........\r
\n" ); document.write( "\n" ); document.write( " $\"1+=+%281%2Ff+-+1%2Fv%29u\"$ .........\r
\n" ); document.write( "\n" ); document.write( " $\"1+=+%281%2Ff+-+1%2Fv%29u\"$ .........divide both sides by $\"1%2Ff+-+1%2Fv\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"1%2F%281%2Ff+-+1%2Fv%29+=+%281%2Ff+-+1%2Fv%29u%2F%281%2Ff+-+1%2Fv%29\"$ .........\r
\n" ); document.write( "\n" ); document.write( " $\"1%2F%281%2Ff+-+1%2Fv%29+=+u\"$ \r
\n" ); document.write( "\n" ); document.write( "or \r
\n" ); document.write( "\n" ); document.write( " $\"u+=+1%2F%281%2Ff+-+1%2Fv%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"u+=+%281%2F1%29%2F%28%28v-f%29%2Ffv%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"u+=+fv%2F%28v-f%29\"$ \r
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