Question

The sum of a number and 15 is 27. Find the number.

Answer 1

number is 12

Explanation:

let the number be n then the sum ( addition) of n and 15 is n + 15 , so

n + 15 = 27 ( subtract 15 from both sides )

n + 15 - 15 = 27 - 15 ( simplify both sides )

n = 12

the number is 12