document.write( "Question 487761: What number must be added to the numerator of 3/10 to produce the fraction 4/5?
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Algebra.Com's Answer #333122 by Theo(13342)\"\" \"About 
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(3/10) + x = (4/5)
\n" ); document.write( "x = (4/5) - (3/10)
\n" ); document.write( "x = (8/10) - (3/10)
\n" ); document.write( "x = (8-3)/10
\n" ); document.write( "x = 5/10
\n" ); document.write( "that's your answer
\n" ); document.write( "(3/10) + (5/10) = (3 + 5)/10 = 8/10 = 4/5\r
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