text: # How do you solve 3sqrt(3x-1)=21?
  
  Mar 7, 2018
  
  $x = \frac{50}{3}$
  
  #### Explanation:
  
  Divide both sides by 3
  
  $\sqrt{3 x - 1} = 7$
  
  Square both sides and it becomes:
  
  $3 x - 1 = 49$
  
  $3 x = 50$
  $x = \frac{50}{3}$