ALGEBRA PRACTICE

A man wanted to get into his work building, but he had forgotten his code.
However, he did remember five clues. These are what those clues were:

The fifth number plus the third number equals fourteen.
The fourth number is one more than the second number.
The first number is one less than twice the second number.
The second number plus the third number equals ten.
The sum of all five numbers is 30. 

What were the five numbers and in what order?
The answer unlocks the attachment above!
If you will open the file, write your name on the list inside, and send this email to your friends to let them solve this rid.

PLS DUN USE EXCEL TO SOLVE IT, USE UR BRAIN TO SOLVE IT. 

I BELIEVE U ALL CAN SOLVE IT. TRY TO EXERCISE THE GAME WITH YOUR BRAIN.

GOOD LUCK and ENJOY!