document.write( "Question 638074: What number added to the numerator and denominator of the fraction 3/8 results in a fraction equal to 2/3? \n" ); document.write( "

Algebra.Com's Answer #402012 by MathLover1(20855) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%282%2Bx%29%2F%283%2Bx%29=3%2F8\"$ ...cross multiply and solve for $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%282%2Bx%298=3%283%2Bx%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"16%2B8x=9%2B3x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"8x-3x=9-16\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"5x=-7\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28x=-7%2F5%29\"$ \r
\n" ); document.write( "\n" ); document.write( "check:\r
\n" ); document.write( "\n" ); document.write( " $\"%282%2Bx%29%2F%283%2Bx%29=3%2F8\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%282%2B%28-7%2F5%29%29%2F%283%2B%28-7%2F5%29%29=3%2F8\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"%28%282%2A5-7%29%2F5%29%2F%28%283%2A5-7%29%2F5%29=3%2F8\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"%28%2810-7%29%2Fcross%285%29%29%2F%28%2815-7%29%2Fcross%285%29%29=3%2F8\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%2810-7%29%2F%2815-7%29=3%2F8\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3%2F8=3%2F8\"$ \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );