Question

The ages of three siblings are all consecutive integers. The sum of their ages is 39. How old is the youngest sibling?

could anyone explain this in a 2 part answer​

Answer 1

Let x = the age of the youngest child

Let x + 1 = the age of the middle child

Let x + 2 = the age of the oldest child

x + x + 1 + x + 2 = 39

3x + 3 = 39

3x = 36

x = 12 years