document.write( "Question 639891: what is the answer when we subtract 30 1/2 and 15 3/5 \n" ); document.write( "
Algebra.Com's Answer #402911 by Edwin McCravy(20056)\"\" \"About 
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document.write( " 30 1/2 =  30 5/10 =  29 15/10\r\n" );
document.write( "-15 3/5 = -15 6/10 = -15  6/10\r\n" );
document.write( "                      14  9/10\r\n" );
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document.write( "In the first step, we got the LCD of 10.  Then we would have subtracted\r\n" );
document.write( "if the larger fraction had been on the top, but since the smaller\r\n" );
document.write( "fraction is on the top, we had to take another step to borrow 1 from \r\n" );
document.write( "the 30 and make it 29, then take that 1 that we just borrowed, think of it\r\n" );
document.write( "as 10/10 and add 10/10 to the 5/10 fraction part making it 15/10,\r\n" );
document.write( "so now the bigger fraction is on top and we can finally do the\r\n" );
document.write( "subtracting.\r\n" );
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document.write( "Edwin
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