Question

There are 3 consecutive integers. If the smallest one is n, find the sum of 3 integers.

Answer 1

3n + 3

Explanation:

The consecutive integers are increasing by 1

n ← the smallest integer

n+1 ← the middle integer

n+1+1 = n+2 ← the largest integer

The sum:

S = n + n+1 + n+2

S = 3n + 3