Here's the question you clicked on:
Derg
The sum of three consecutive integers is 267. What are the three integers?
Let first number be n+(n+1)+(n+2)=267 Solve for n.
267/3 = 89. So we know that the numbers average to 89. 88, 89, and 90 are the only three consecutive numbers that average to 89 and sum to 267.