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October 22, 2014

October 22, 2014

Posted by **Kim** on Thursday, February 21, 2013 at 5:57pm.

- Math -
**Knights**, Thursday, February 21, 2013 at 6:00pmfirst simplify to lowest terms, so the frist fraction is 4 3/5.

then we find least common denominator, so least common multiple of 5 and 4 is 20. we times first fraction by 4 and second by 5. thus we get 4 12/20 and 3 15/20

then we convert to improper fraction to get 4*20 + 12= 92

92/20 - 3 15/20

the second fraction is 3*20 + 15 = 75

so 92/20 - 75/20

so 92-75 = 17

so it is 17/20

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