Perimeter of a rectangle. Solve the formula for w . P = 2 l + 2 w
A) $w = \frac { P } { 2 } - l$
B) $w = \frac { P } { 2 } + l$
C) $w = \frac { p } { 2 } - \frac { l } { 2 }$
D) none of these

Question

Quizplus · Accepted Answer

To solve for w, we isolate the variable by moving everything else to the other side of the equation. First, we can simplify the equation by dividing both sides by 2: 
$$\frac{P}{2} = l + w$$
Next, we can subtract l from both sides:
$$\frac{P}{2} - l = w$$
This is the same as the formula given in choice A.

Perimeter of a Rectangle w=P2−lw = \frac { P } { 2 } - lw=2P​−l

Perimeter of a Rectangle $w = \frac { P } { 2 } - l$