solve for x. e^x = 87

Explanation:

Step1: Apply natural - log property

Take the natural logarithm of both sides: $\ln(e^{x})=\ln(87)$.

Step2: Simplify left - hand side

Since $\ln(e^{x}) = x$, we have $x=\ln(87)$.

Answer:

$x = \ln(87)$