document.write( "Question 870127: 3a/4b - 2a/5b\r
\n" ); document.write( "\n" ); document.write( "i got 3a*5b/4b*5b - 2a*4b/4b*5b= 15ab/20b - 8ab/20b = 7ab/20b \r
\n" ); document.write( "\n" ); document.write( "is that correct? if not can you plese help me arrive at the right answer
\n" ); document.write( "

Algebra.Com's Answer #524679 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
correct except for the last step.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "7ab / 20b is equal to 7a/20 because the b in the numerator and denominator cancels out.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );