SOLUTION: Find f(x) if it is known that f(x+5)=x+12.

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Question 1141351: Find f(x) if it is known that f(x+5)=x+12.
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
f(x+5) = x + 12 = (x+5)+7 --> +highlight%28+f%28x%29+=+x%2B7+%29+


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To see this more clearly, use a different letter for the independent vsriable, then set it equal to x+5 as a 2nd step:

f(w) = w+7

Now set w=x+5:

f(x+5) = (x+5)+7 = x+12