Sorry I don't see a question here but .
Knowing your income tax rate can help you calculate your tax liability for unexpected income, retirement planning or investment income. This calculator helps you estimate your average tax rate, your tax bracket, and your marginal tax rate for the current tax year.
Yes, you're right! The first step is rewriting the equation as

Subtract
from both sides:

Use the property
to rewrite the equation as

Divide both sides by 

Alternative strategy:
Consider both sides as exponents of e:

Use
to write

Divide both sides by a:

Consider the logarithm base b of both sides:

The two numbers are the same: you can check it using the rule for changing the base of logarithms
Answer:
divide the zero
Step-by-step explanation: