How do you evaluate the expression (c-a)- b given that a=-10, b=4, and c=1?

Apr 12, 2018

$7$

Explanation:

$\text{substitute the given values into the expression}$

$\Rightarrow \left(c - a\right) - b$

$= \left(\textcolor{b l u e}{1} - \textcolor{red}{- 10}\right) - \textcolor{m a \ge n t a}{4}$

$\left[\text{note that "--" is equivalent to} +\right]$

$= \left(1 + 10\right) - 4 = 11 - 4 = 7$