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R+1/2r=9/4 can someone please explain on how to solve this equation?

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please help! thanks in advance
asked Sep 4, 2013 in PRE-ALGEBRA by anonymous

1 Answer

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r + ½r = 9/4; note that "r" is the same as 2/2 r

2/2r + ½r = 9/4


(3/2)r = 9/4

r = 9/4 ÷ 3/2


r = 9/4 • 2/3

   = 18/12

    = 3/2

answered Sep 4, 2013 by Naren Answers Apprentice

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