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How to calculate ( 1/a - 2/b ) / ( 2/a - 1/b )

 Aug 20, 2015

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 #3
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How to calculate ( 1/a - 2/b ) / ( 2/a - 1/b )

(1a2b)(2a1b)(abab)=(1a2b)ab(2a1b)ab=(1aab2bab)(2aab1bab)=(b2a)(2ba)

 

 Aug 21, 2015
 #1
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p-4/p + 16/5p - 1/5 =?

 Aug 20, 2015
 #2
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Get the LCM of a and b which is ab then divide accordingly. You should get ((b-2a)/ab) / ((2b-a)/ab) then after cancelling ab on both sides, you remain with (b-2a) / (2b-a)

 Aug 20, 2015
 #3
avatar+26396 
+5
Best Answer

How to calculate ( 1/a - 2/b ) / ( 2/a - 1/b )

(1a2b)(2a1b)(abab)=(1a2b)ab(2a1b)ab=(1aab2bab)(2aab1bab)=(b2a)(2ba)

 

heureka Aug 21, 2015

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