Question 563772
What you have here is a system of linear equations in two variables.

The variables can be any letters of choice.


I will use a and b.


Here is the system of equations you need:

a + b = 32
2a - 3b = 39

Use the substition method to solve for a and b.

Here's a video clip from yourtube.com that explains how to solve this type of problem.

http://www.youtube.com/watch?v=NQDWhnnEQkI&feature=results_video&playnext=1&list=PLDCB79F19C048E9C5