Precalculus Examples

$\ln (x + 4) = \ln (12)$

Step 1

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

$x + 4 = 12$

Step 2

Move all terms not containing $x$ to the right side of the equation.

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Step 2.1

Subtract $4$ from both sides of the equation.

$x = 12 - 4$

Step 2.2

Subtract $4$ from $12$ .

$x = 8$