Answer: 8
Step-by-step explanation:
I took the test and I got it right.

First, replace the numerator with the parentheses.
Second, multiply both sides by 3.
Third, multiply 2 × 3 to get 6.
Fourth, take away 15 from each side.
Fifth, simplify -6 - 15 to get -21.

Answer:
n = -21
12,24,(36),48,(60),72,84….
So the HCF of 60 and 36 is 12