Question

To find the perimeter of a rectangle you use the formula: P = 2(l + w).

l is the length of the rectangle.
w is the width of the rectangle.
Which equation would you use to find the value of w if you were given l and P?

Answer 1

P = 2(l + w).
Divide each side by 2
P/2 =l+w
Subtract l from each side
w = P/2 - l
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