The sum of 3 consecutive numbers equals 39
What are the 3 numbers?
Setup Relational Equation
1) Set up an equation where our numbers are n, n + 1, n + 2
2) We increment by 1 for each number since we have numbers.
3) We set this sum of consecutive numbers equal to 39
n + (n + 1) + (n + 2) = 39
Simplify this equation by grouping variables and constants together:
(n + n + n) + 1 + 2 = 39
3n + 3 = 39
Subtract 3 from each side to isolate 3n:
3n + 3 - 3 = 39 - 3
Cancel the 3 on the left side and we get:
3n + 3 - 3 = 39 - 3
3n = 36
Divide each side of the equation by 3 to isolate n:
Cancel the 3 on the left side:
n = 12
Call this n1, so we find our other 2 numbers
n2 = n1 + 1
n2 = 12 + 1
n2 = 13
n3 = n2 + 1
n3 = 13 + 1
n3 = 14
List out the 3 consecutive numbers
12 ← 1st number, or the Smallest, Minimum, Least Value
13 ← 2nd number
14 ← 3rd or the Largest, Maximum, Highest Value
Check your work:
12 + 13 + 14 ? 39
39 = 39
Final Answer:
(12, 13, 14)
How does the Sum of Consecutive Numbers Calculator work?
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What 1 formula is used for the Sum of Consecutive Numbers Calculator?
Given an integer n, the next consecutive number is n + 1
What 4 concepts are covered in the Sum of Consecutive Numbers Calculator?
- consecutive integers
- integers that follow each other
n, n + 1 - integer
- a whole number; a number that is not a fraction
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