Which numbers can be expressed as the sum of 2 consecutive integers? Which numbers can be expressed as the sum of 3 consecutive integers?

Step-by-step explanation:

If X is an integer then (X + 1) = the next consecutive integer so the sum of two consecutive integers can be expressed as X + (X + 1) or 2X + 1. Three consecutive integers means three numbers that follow each other like 1,2,3. So if we add these up we get 6 as a sum.