document.write( "Question 984487: The ratio of numerator to denominator is 2 to 3. If both are increased by 2, the fraction becomes 3/4. What is original fraction? Which of following systems can be used to solve? \r
\n" ); document.write( "\n" ); document.write( "N+4=3 and d+5=4
\n" ); document.write( "or
\n" ); document.write( "3n-2d=0 and 4n+2=3d+2
\n" ); document.write( "or
\n" ); document.write( "3n=2d and 4n+8=3d+6\r
\n" ); document.write( "\n" ); document.write( "How do you figure this out? Lost!
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Algebra.Com's Answer #605273 by MathLover1(20849)\"\" \"About 
You can put this solution on YOUR website!
let's numerator be \"n\" and denominator \"d\"\r
\n" ); document.write( "\n" ); document.write( "given: the ratio of numerator to denominator is \"2\" to \"3\"\r
\n" ); document.write( "\n" ); document.write( "so, we have
\n" ); document.write( "\"n%2Fd=2%2F3\".......eq.1\r
\n" ); document.write( "\n" ); document.write( "if both are increased by \"2\", the fraction becomes \"3%2F4\"\r
\n" ); document.write( "\n" ); document.write( "\"%28n%2B2%29%2F%28d%2B2%29=3%2F4\".......eq.2\r
\n" ); document.write( "\n" ); document.write( "to figure out hat is original fraction, solve this system:\r
\n" ); document.write( "\n" ); document.write( "\"n%2Fd=2%2F3\".......eq.1
\n" ); document.write( "\"%28n%2B2%29%2F%28d%2B2%29=3%2F4\".......eq.2
\n" ); document.write( "----------------------------------------\r
\n" ); document.write( "\n" ); document.write( "start with \"n%2Fd=2%2F3\".......eq.1 and solve for \"n\"\r
\n" ); document.write( "\n" ); document.write( "\"n=%282%2F3%29d\"....substitute it in eq.2\r
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\n" ); document.write( "\n" ); document.write( "\"%28%282%2F3%29d%2B2%29%2F%28d%2B2%29=3%2F4\".......eq.2 and solve for \"d\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%28%282%2F3%29d%2B2%29=%283%2F4%29%28d%2B2%29\"\r
\n" ); document.write( "\n" ); document.write( "\"2d%2F3%2B6%2F3=3d%2F4%2B6%2F4\"......both sides multiply by \"12\"\r
\n" ); document.write( "\n" ); document.write( "\"12%282d%2F3%29%2B12%286%2F3%29=12%283d%2F4%29%2B12%286%2F4%29\"....simplify\r
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "\n" ); document.write( "\"4%2A2d%2B4%2A6=3%2A3d%2B3%2A6\"\r
\n" ); document.write( "\n" ); document.write( "\"8d%2B24=9d%2B18\"\r
\n" ); document.write( "\n" ); document.write( "\"24-18=9d-8d\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28d=6%29\"\r
\n" ); document.write( "\n" ); document.write( "go back to \"n=%282%2F3%29d\",substitute \"6%29\" for \"d\" and solve for \"n\"\r
\n" ); document.write( "\n" ); document.write( "\"n=%282%2F3%296\"\r
\n" ); document.write( "\n" ); document.write( "\"n=%282%2Fcross%283%29%29cross%286%292\"\r
\n" ); document.write( "\n" ); document.write( "\"n=2%2A2\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28n=4%29\"\r
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\n" ); document.write( "\n" ); document.write( "so, the numerator is \"n=4\" and denominator is \"d=6\"\r
\n" ); document.write( "\n" ); document.write( "original fraction is: \"highlight%284%2F6%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "check:\r
\n" ); document.write( "\n" ); document.write( "\"n%2Fd=2%2F3\".......eq.1
\n" ); document.write( "\"4%2F6=2%2F3\"
\n" ); document.write( "\"cross%284%292%2Fcross%286%293=2%2F3\"
\n" ); document.write( "\"2%2F3=2%2F3\" \r
\n" ); document.write( "\n" ); document.write( "and \r
\n" ); document.write( "\n" ); document.write( "\"%28n%2B2%29%2F%28d%2B2%29=3%2F4\".......eq.2
\n" ); document.write( "\"%284%2B2%29%2F%286%2B2%29=3%2F4\"
\n" ); document.write( "\"6%2F8=3%2F4\"
\n" ); document.write( "\"cross%286%293%2Fcross%288%294=3%2F4\"
\n" ); document.write( "\"3%2F4=3%2F4\"\r
\n" ); document.write( "\n" ); document.write( "
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