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Simlpying Complex Exprssions

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Hi I would really appreciate anyone who can help me with this problem. I have been working on this problem for about an hour and have yet to understand it.

9/2+7/4 / 3/7-8/4
 Oct 21, 2012

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Math Idiot:

9/2+7/4 / 3/7-8/4



[input]((9/2)+(7/4)) / ((3/7)-(8/4))[/input]

((9/2)+(7/4)) / ((3/7)-(8/4))
((2*9/(2*2))+(7/4)) / ((4*3/(4*7))-(7*8/7*4))
( 18/4+7/4 )/ ( 12/28 - 56/28 )
(25/4) / ( -44 / 28 )
(25/4) / ( -11 / 7 )
(25/4) * ( 7 / -11 )
(25*7) / (-4*11)
- 175 / 44
-3 43/44
 Oct 22, 2012

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