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April 16, 2014

Homework Help: methods of sbtracting mixed fractions

Posted by Suzanne on Monday, December 20, 2010 at 2:59pm.

Hello, I need did a subtraction problem with mixed numbers by converting the LCD of the denominator.
However, when I went to Algebra.help they did the problem by converting the mixed problem to an improper fraction and then worked it that way.

However, I know that the answers should be the same.

Please check my method. I don't want to convert the whole numbers to mixed.

9 10/12 minus 5 6/7
9 70/84 minus 5 72/84
equals 4 2/84
reduced to 4 1/42

Algebra help say the answer is:
3 41/42

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