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[center][/center]what does 1/4 + 1/3 = ?
 Mar 20, 2012
 #1
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[input]1/4 + 1/3[/input]

least common multiple of 4 and 3:
[input]lcm( 4, 3 )[/input]

12/4 = 3
(3*1)/(3*4) = 3/12

12/3 = 4
(4*1)/(4*3) = 4/12

3/12 + 4/12 = 7/12
 Mar 20, 2012

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