document.write( "Question 35317: Adding rational #
\n" ); document.write( "Cant figure this problem out..Any help will be appreciated.\r
\n" ); document.write( "\n" ); document.write( "5 1
\n" ); document.write( "_____ + _______
\n" ); document.write( "7x+35 42x+126\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "I tried factoring both Denominator
\n" ); document.write( "7(x+5) 42(x+3)
\n" ); document.write( "then 7(42)=294(x+5)(x+3)\r
\n" ); document.write( "\n" ); document.write( "I am lost after that
\n" ); document.write( "

Algebra.Com's Answer #21569 by rapaljer(4671)\"\" \"About 
You can put this solution on YOUR website!
\"5%2F%287%28x%2B5%29%29+%2B1%2F%2842%28x%2B3%29%29+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Your problem was that you did not find the Lowest Common Denominator. Notice that 7 divides evenly into 42, so the LCD = \"42%28x%2B5%29%28x%2B3%29+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Now, multiply the first fraction by 6(x+3) and the second fraction by (x+5):\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Now, the LCD is 42(x+3)(x+5), and that becomes the denominator of the fraction. The numerator of the fraction becomes the sum of the numerators.
\n" ); document.write( "\"+%2830%28x%2B3%29+%2B+%28x%2B5%29+%29+%2F%2842%28x%2B3%29%28x%2B5%29%29+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "NOW DON'T DIVIDE ANY OF THESE OUT!! They look like factors, but they are NOT factors!! Multiply out the numerators.
\n" ); document.write( "\"+%2830%28x%2B3%29+%2B+%28x%2B5%29+%29+%2F%2842%28x%2B3%29%28x%2B5%29%29+\"
\n" ); document.write( "\"+%2830x%2B90+%2B+x%2B5%29%2F%2842%28x%2B3%29%28x%2B5%29%29+\"
\n" ); document.write( "\"+%2831x%2B95+%29%2F%2842%28x%2B3%29%28x%2B5%29%29+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "R^2 at SCC\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );