# How do you combine -81- 13- [ - 75- ( - 2) ] + 25?

Aug 7, 2017

See a solution process below:

#### Explanation:

First, rewrite the term in parenthesis:

$- 81 - 13 - \left[- 75 - \textcolor{red}{\left(- 2\right)}\right] + 25 \implies$

$- 81 - 13 - \left[- 75 + \textcolor{red}{2}\right] + 25$

Next, evaluate the term within the brackets:

$- 81 - 13 - \left[\textcolor{b l u e}{- 75} + \textcolor{red}{2}\right] + 25 \implies$

$- 81 - 13 - \left[\textcolor{b l u e}{- 73}\right] + 25 \implies$

$- 81 - 13 + \textcolor{b l u e}{73} + 25$

Then, perform the addition and subtraction operations from left to right:

$\textcolor{red}{- 81} - \textcolor{b l u e}{13} + 73 + 25 \implies$

$\textcolor{red}{- 94} + \textcolor{b l u e}{73} + 25 \implies$

$\textcolor{red}{- 21} + \textcolor{b l u e}{25} \implies$

$4$