### Home > CCA2 > Chapter 7 > Lesson 7.1.1 > Problem7-8

7-8.

Solve and check your solution: $2 \sqrt { 21 - x } - \sqrt { 3 x - 6 } = 5$.

Graph each equation listed below.

$y= 2\sqrt{21-x}-\sqrt{3x-6}$

$y=5$

Where do the curves intersect? Then, look back at the original equation. Do you need a solution for $x,\ \text{for}\ y$, or for both?

$x=5$, remember to check your solution.