algebra
posted by Eliana .
Hi, can someone please help me with this question?
When each of three different numbers is added to the average of two other numbers, the results are 105, 106 and 125. What is the average of the three original numbers?
I'm not exactly sure how to go about this problem... I'm pretty sure I'll need variables, but I'm just having a really hard time setting it up. I'd really appreciate some hlep.

sorry, nevermund, I figured it out. :)