Identify the first step to solving the following equation

Hi there!

The answer is D.
We need to isolate each square root. We can simply do this by adding to both sides of the equation.

When we isolated the square roots, our equation looks like this:


Now we can easily square both sides of the equation, which would have been much harder earlier.

~ Hope this helps you!

Answer:

13.46

step-by-step explanation:

16.80 x .20 = 13.46