How do you solve questions like P2L 2W solve for W?

Answer 1

First, I am assuming you mean P = 2L + 2W, solve for W. If so, then see below!

You solve equations the same way, whether they have multiple variables or not:

Distribute, Combine Like Terms, Move the variable you are isolating to one side, Add or Subtract, then Multiply or Divide.

Let's show how this equation is very much like an equation having only one variable:

28 = 20 + 2W

-20 -20

8 = 2W

÷2 ÷2

4 = W

So, if you get stuck, just "fake" the variables you aren't solving for into being random numbers. Solve your "fake" equation like you would any equation. Then use the same steps in your original "variable" equation.

P = 2L + 2W

-2L -2L

P-2L= 2W

÷2 ÷2

(P-2L)/2 = W