It is: the sum of three consecutive numbers is 78 what is the smallest of three numbers?

Define x :

Let the smallest number be x.
The other two numbers will be x+1 and x+2.


Construct equation :

The sum of all 3 numbers is 78
⇒ x + x + 1 + x + 2 = 78


Solve x :

x + x + 1 + x + 2 = 78
3x + 3 = 78
3x = 78 - 3
3x = 75
x = 25


Smallest number = 25

Cis your correct answer