Question

The formula for the perimeter of a rectangle is P=2(l+w).

Solve for l.




l=p−w2

l=p2−w

l=2P−w

l=P2+w

Answer 1

Start with

`P = 2(l+w)`

Divide both sides by 2:

`(P)/(2) = l+w`

Subtract
`w` from both sides:

`(P)/(2) - w = l`

Answer 2

The value of the equation for I is
`I=(P)/(2)-w`.

Explanation:

Consider the provided equation.

`P=2(l+w)`

We need to solve the equation for I.

Divide both the sides by 2.

`(P)/(2)=(2(l+w))/(2)`

`(P)/(2)=l+w`

Now isolate the variable I.

Subtract w from both side.

`(P)/(2)-w=l+w-w`

`I=(P)/(2)-w`

Hence, the value of the equation for I is
`I=(P)/(2)-w`.