How do you evaluate 4[ 9- ( 5- 7) ]?

Sep 2, 2017

See a solution process below:

Explanation:

First, evaluate the expression within the parenthesis:

$4 \left[9 - \left(\textcolor{red}{5} - \textcolor{red}{7}\right)\right] \implies$

$4 \left[9 - \left(- 2\right)\right] \implies$

$4 \left[9 + 2\right]$

Next, evaluate the expression within the brackets:

$4 \left[\textcolor{red}{9} + \textcolor{red}{2}\right] \implies$

$4 \cdot 11$

Now, evaluate the remaining multiplication expression:

$4 \cdot 11 \implies 44$