If the objective is to solve the equation for the variable A, and each letter A, B, C, and D are considered to be independent variables, then we can perform the following algebraic operations.
We begin with
D = ABC
Since the right side of the equation ABC is a product, we can divide both sides of the equation by B and C to "move" them to the left side.
First, dividing by C
D / C = AB
Then, dividing by B
D / BC = A
Now the equation is considered to be solved for the variable A, since A is alone on one side of the equation.
D / BC = A
