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AMC8 2027 - Self-practice Set 3 Question 14

AMC8 · AMC8 2027 - Self-practice Set 3

Question 14

If $a\otimes b=\frac{a+b}{a-b}$, what is $(6\otimes5)\otimes4$?
  1. $\frac{15}{11}$
  2. $\frac{15}2$
  3. $\frac{15}7$
  4. 5
  5. -5