document.write( "Question 26831: how subtract fractions \n" ); document.write( "
Algebra.Com's Answer #14619 by elima(1433)\"\" \"About 
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When subtracting and adding fractions you need to have LCD;
\n" ); document.write( "ex;
\n" ); document.write( "\"2%2F5\"-\"1%2F2\"=
\n" ); document.write( "You need to have common denominators first; let's make it 15;
\n" ); document.write( "so what times 5 = 15; 3, so you multiply the numerator by 3;
\n" ); document.write( "\"2%2F5\"=\"6%2F15\"
\n" ); document.write( "What times 3 = 15; 5, so we multiply the numerator by 5;
\n" ); document.write( "\"1%2F3\"=\"5%2F15\"
\n" ); document.write( "Now that we have LCD we can subtract, you only subtract the numerators;
\n" ); document.write( "\"6%2F15\"-\"5%2F15\"=-\"1%2F15\"
\n" ); document.write( "hope you understand
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