Start by reviewing your knowledge of natural logarithms. If we take the ln of both sides we get e^z=ln(1). Do the same thing again and wheel about the ln(ln(1)). There's going to be complex solutions, Wolfram Alpah gets them but let me know if you figure out how to do it?
The correct answer for the question that is being presented above is this one: "symmetric property." Symmetric Property has the property of a = b, then b = a. This property is one of the equivalent properties of equality.
m ABC = m CBD, then m CBD = m ABC.