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Australian AMC 2023 - Senior Question 16

AMC AUSTRALIA · Australian AMC 2023 - Senior

Question 16

If $f(x)=5+x$ and $g(x)=7-x$, then $f(g(x))-g(f(x))$ equals
  1. $10-x$
  2. 7
  3. $x+2$
  4. 10
  5. $2x-2$