document.write( "Question 203418: pieces of moulding 7 1/2 feet long, 2 3/4 feet long and 71/2 feet long to frame a doorway. If started with 20 feet of moulding how much is left over? \n" ); document.write( "
Algebra.Com's Answer #153481 by rfer(16322)\"\" \"About 
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2.25ft
\n" ); document.write( "the easiest way to do this problem is use decimals. Add them up and subtract from 20.
\n" ); document.write( "or find common denominator, and then subtract from 20
\n" ); document.write( "7 2/4+2 3/4+7 2/4=16 7/4=17 3/4
\n" ); document.write( "20-17 3/4= 2 1/4 ft
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