document.write( "Question 538037: The denominator of a fraction is 4 more than the numerator if both the numerator and denominator are increased by 1 the the resulting fraction equals 1/2 find the original fraction \n" ); document.write( "
Algebra.Com's Answer #353128 by ankor@dixie-net.com(22740)\"\" \"About 
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The denominator of a fraction is 4 more than the numerator if both the numerator and denominator are increased by 1 the the resulting fraction equals 1/2 find the original fraction
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\n" ); document.write( "Let x = the numerator
\n" ); document.write( "then
\n" ); document.write( "(x+4) = the denominator
\n" ); document.write( ":
\n" ); document.write( "\"%28%28x%2B1%29%29%2F%28%28x%2B4%29%2B1%29\" = \"%28%28x%2B1%29%29%2F%28%28x%2B5%29%29\" = \"1%2F2\"
\n" ); document.write( "Cross multiply
\n" ); document.write( "2(x+1) = (x+5)
\n" ); document.write( "2x + 2 = x + 5
\n" ); document.write( "2x - x = 5 - 2
\n" ); document.write( "x = 3 is the numerator
\n" ); document.write( "then
\n" ); document.write( "3+4 = 7 is the denominator
\n" ); document.write( "and
\n" ); document.write( "\"3%2F7\" is the original fraction
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