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
The formula P2L 2w is most likely written incorrectly. It is unclear what it represents without further context or clarification.
x = (P - 2W) / 2
That's not an equation. It need a = sign before you can solve it. However you can simplify it by combining like factors
Combine like terms: 8w-6w = 2w -8-7 = -15 6w4w = 24w2 So, your expression is now: 24w2 + 2w - 15
2L+2W=P (S2w) Subtract 2W from both sides 2L=P-2W (D2) Divide both sides by 2 L=(P-2W)/2
Using basic algebra we can solve this problem. First we need to write out the problem:5-32+2w = -7-27+2w = -72w = 20w = 10
Oh honey, solving for w in 2l + 2w = P is as easy as stealing candy from a baby. Just subtract 2l from both sides and then divide by 2. Voila, w = (P - 2l) / 2. Now go show off your math skills like the boss you are.
length = 48, width = 24 l = 2w 2l + 2w = 144 2l + 2w = 144 2(2w) + 2w = 144 4w + 2w =144 w = 144/6 w = 24 l = 2w l = 2(24) l = 48
2w + 16 = - 6w - 8 2w + 16 + 6w = - 8 8w + 16 = - 8 8w = - 8 - 16 8w = - 24 w = - 3
Oh, dude, it's like super simple. So, to solve p = 21 + 2w, you just need to isolate w. Subtract 21 from both sides, and then divide by 2. Boom, you got your answer! It's like math magic, but without the cool cape.
22
4w - 2 = -7w11w - 2 = 011w = 2w = 2/11