# How do you find 4x - 2y - z, if x = 2, y = 3, and z = -8?

Apr 28, 2018

$10$
$\text{substitute the given values for x, y and z into the}$
$\text{expression}$
$\left(4 \times \textcolor{red}{2}\right) - \left(2 \times \textcolor{b l u e}{3}\right) - \left(\textcolor{m a \ge n t a}{- 8}\right)$
$= 8 - 6 + 8 = 10$