Solve the formula for calculating the perimeter of a parallelogram with sides b and c for c

Answer: OPTION B.
Step-by-step explanation:
To solve for c from the equation shown in the image attached, you must apply the proccedure shown below:
- Subtract 2b from both sides of the equation:
[tex]P-2b=2b+2c-2b\\P-2b=2c[/tex]
- Now, you must divide by 2 to both sides of the equation as following:
[tex]\frac{P-2b}{2}=\frac{2c}{2}\\c=\frac{P}{2}-b[/tex]
Then the answer is the option B.