I assume that the equation you mean is below:

To find roots for this equation, we have to get rid of the denominator. We can do by multiplying both sides by 3.

Factor w-term out (common factor)

Answer
- The roots of quadratic equation are 0,-3
Answer:
12
Step-by-step explanation:
Answer:
Therefore,
.......Equation
Angelica's Brother's age is 11 years old.
Step-by-step explanation:
Given:
Let the current age of Angelica's Brother be 'x' years old
Angelica's current age is 13 years old,
According to given condition,
Therefore the Equation will be,

On solving this equation we get

Therefore,
Angelica's Brother's age is 11 years old.
Therefore,
.......Equation
Angelica's Brother's age is 11 years old.
0.39 as a percent is 39%. You get this by multiplying 0.39 by 100.