The sum of two numbers is 13. If one number is subtracted from the​ other, the result is −1. Find the numbers.

Question

The sum of two numbers is 13. If one number is subtracted from the other, the result is −1. Find the numbers.

Answer 1

This is a form you should learn

Let a be the larger number, b the smaller

a+b=13

a-b=1

add the equations

2a=14 so a=7

subtract the equations

2b=12 so b=6