### Home > INT3 > Chapter 6 > Lesson 6.3.1 > Problem6-78

6-78.

Solve and check your solution. Homework Help ✎

Place one radical on each side of the equation, then square.

$2\sqrt{21-x}=5+\sqrt{3x-6}$

You will still have a radical after this step. Isolate it and square again.

x = 5, remember to check your solution.