document.write( "Question 128457: A denominator is 3 times the numerator of a fraction. If 4 is added to the denominator and 2 subtracted from the numerator, the resulting fraction is 3/4. Find the original fraction. \n" ); document.write( "
Algebra.Com's Answer #94038 by checkley71(8403)\"\" \"About 
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(X-2)/(3X+4)=3/4 CROSS MULTIPLY:
\n" ); document.write( "3(3X+4)=4(X-2)
\n" ); document.write( "9X+12=4X-8
\n" ); document.write( "9X-4X=-8-12
\n" ); document.write( "5X=-20
\n" ); document.write( "X=-20/5
\n" ); document.write( "X=-4 ANSWER.
\n" ); document.write( "PROOF:
\n" ); document.write( "-4/3*-4=-4/-12=4/12=1/3
\n" ); document.write( "
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