Answer to Facebook Math Challenge – October 30, 2012
[3 - (2 - 4(6 - 5) + 4)] + 2 = ?
The answer is 3!
Here's the explanation, from my Facebook friend and former math minor, Monica Williamson:
You work within the inner parentheses first, 6-5=1.
The middle four is next to the one in parentheses so that means you you multiply: 4(1)=4.
Then you work to the outer parentheses:
2-4+4=2.
Then you work within the brackets: [3-2]=1.
Then you add that which is outside the brackets: 1+2=3.
Thanks to: www.math.wsu.edu for the question.