Here is the solution/answer to the brain teaser question of this week:

9 x 1 / 3 + 4 - 1 / 7 = ?
I am going to put parenthesis to make it easier to understand.
(9 x 1) / 3 + 4 - (1 x 7) = ?
Remember order of operations when you do this.
First multiply:
9 / 3 + 4 - 7 = ?
Then divide:
3 + 4 - 7 =?
Finally add and subtract left to right:
7 - 7 = 0
The answer is zero!

I hope you enjoy the brain teaser, the next one is coming Tuesday, September 3, 2013.

-Joel