((5)/(x)+(5)/(y))/(10x+10y)

I dont understand how to do this
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1 Answer

5       5         To divide a fraction you multiply

--  +  ---         by the reciprical.

x        y

----------

10x + 10y

5      5         1

--  + -- * ----------------

x      y    (10x + 10y)

5y + 5x                 5(x + y)                 1

-----------------   = ---------------   = --------------

  xy(10(x+y))       10xy(x + y)            2xy

 

by Level 10 User (55.7k points)

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