22.3k views
2 votes
The sum of two numbers is 30 and their difference is 6

User Amr Salama
by
8.2k points

1 Answer

3 votes

I'm going to assume that you are trying to find the two numbers. Based on the information in the problem, we can create the following equations (where
a and
b are the two numbers):


a + b = 30


a - b = 6


We have a systems of equations. In this case, it would be easier to use elimination by adding vertically. This produces the result:


2a = 36


a = 18


To find
b, substitute the value for
a into one of the earlier equations:


18 + b = 30


b = 12


The two numbers are 12 and 18.

User Idan Magled
by
7.5k points

No related questions found