Answer:
[tex]\huge\boxed{l = \frac{p}{2} - 2}[/tex]
Step-by-step explanation:
If we have the equation [tex]p=2(l+w)[/tex] and we want to solve for l, our goal is to isolate l on one side of the equation.
We can do this by reversing the equation - looking at what is stopping l from being alone on one side.
First lets divide both sides by 2:
[tex]p \div 2 = 2(l+w) \div 2\\\frac{p}{2}=l+w[/tex]
Now we can subtract w from both sides.
[tex]\frac{p}{2} - w = l+w-w\\\\\frac{p}{2} - w = l[/tex]
Hope this helped!
