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Mathematics 19 Online
mitch1738:

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

SmokeyBrown:

So for this question, all we have to do is to get 'l' by itself on one side of the equation. We can take it step by step P = 2l + 2w P - 2w = 2l P/2 - w = l

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