Answer:
[tex]\frac{P-21}{2} =w[/tex]
Step-by-step explanation:
To solve for w use the properties of equality. A property of equality states that if you do the same thing to both sides it is still equal.
First, subtract 21 from both sides
1) P-21=2w
Then, divide both sides by 2
2) (P-21)/2=w
This formula allows you to solve for w by plugging in a P-value.
