Question

Rezolvati in multimea numerelor reale ecuatia log2 (3x-1) - log2 5 = 0.

Answer 1

 

$\displaystyle\bf\\log_2(3x-1)-log_2(5)=0\\\\log_2(3x-1)=log_2(5)\\\\\implies~3x-1=5\\\\3x=5+1\\\\3x=6\\\\x=\frac{6}{3}\\\\\boxed{\bf x=2}$