Question

if one number is 10 and their sum is 15 Find the number

Answer 1

5
only subtract 10 from 15

Answer 2

Let the second number be x.
Given first number =10.

Sum of the above numbers = x+10

According to the question ,

x+10=15

By transposition ;

x = 15 - 10

x = 5 .

The other number is 5.