Answer:
Standard form:

A = 12, B = 3 and C = -2
Explanation:
Given:
The equation:

To find:
The standard form of given equation and find A, B and C.
Solution:
First of all, let us write the standard form of an equation.
Standard form of an equation is represented as:

A is the coefficient of x and can be positive or negative.
B is the coefficient of y and can be positive or negative.
C can also be positive or negative.
Now, let us consider the given equation:

Multiplying the whole equation with 3 first:

Now, let us take all the terms on one side:

Now, let us compare with
.
So, A = 12, B = 3 and C = -2