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trapsal2015
R is equal to 47. U have to add the 9 and 38 to find what R represents. U wellllccccoooommmmmeeee
We start with r-38=9
 So in this case we are solving for r.
 You want to get the variable (r) by itself so you'll add 38 to 9
         r-38=9
          +38 +38
So 9+38 is 47. 
R by itself is equivalent to 1r so 47/1 is 47
   Therefore, r=47

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