Question

Given the following formula, solve for I. P = 2(1 + b)

Answer 1

Answer:  $l=\dfrac{P}{2}-b$

Step-by-step explanation:

P = 2(l + b)

Divide both sides by 2:

$\dfrac{P}{2}=l+b$

Subtract b from both sides:

$\dfrac{P}{2}-b=l$

Note: You can also multiply b by  $\frac{2}{2}$ if you want the left side to be one fraction.

$\dfrac{P}{2}-\bigg(\dfrac{2}{2}\bigg)b=l\\\\\\\dfrac{P-2b}{2}=l$