# What is 16+ [ - 8+ ( - 9) ]?

Sep 20, 2016

$16 + \left[- 8 + \left(- 9\right)\right] = \textcolor{b l u e}{- 1}$

#### Explanation:

Follow the order of operations as indicated by the acronym PEMDAS.

$16 + \left[- 8 + \left(- 9\right)\right]$

Simplify the terms inside the brackets/parentheses.

$16 + \left[- 8 - 9\right]$

Simplify.

$16 - 17$

Subtract.

$16 - 17 = - 1$