For the equation to be equal, the argument of the logarithms on both sides of the equation must be equal.

Move all terms containing to the left side of the equation.

Subtract from both sides of the equation.

Subtract from .

Subtract from both sides of the equation.

Divide each term by and simplify.

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Divide by .

Solve for x log base 3 of x+12 = log base 3 of 5x