Question

Rearrange the equation algebraically to solve for the unknown quantity.

Answer 1

Given:

Consider the given equation is

$P=2L+2W$

To find:

The solution of the equation for l.

Solution:

We have,

$P=2L+2W$

Substract 2W from both sides.

$P-2W=2L+2W-2W$

$P-2W=2L$

Divide both sides by 2.

$\dfrac{P-2W}{2}=\dfrac{2L}{2}$

$\dfrac{P-2W}{2}=L$

$L=\dfrac{P-2W}{2}$

Therefore, the correct option is 3.