# Math Help - Simple algebra

1. ## Simple algebra

I can't seem to figure this one out. It looks simple but I don't know how to start it. Any help will be appreciated.

If 3 times Jane's age, in years, is equal to 8 times Beth's age, in years, and the difference between their ages is 15 years, how old are Jane and Beth?

2. $3J=8B$ from this you can see that Jane is older than Beth, so $J-B=15$.

Now you just need to solve these equations simultaneously for their ages. Do you know how to do this?