Posted by Taylor on Wednesday, February 10, 2010 at 11:00am.
Set up the two equations in the two vzriables, length (L) and width (W).
They are:
L - W = 6
and
L W = 84
Then solve them, using algebra.
What do you mean by solving them by using algebra? I don't understand what to do
I made two mistakes. I was very sloppy reading the problem,. and apologize.
This is how algebra is done. If you don't use this method, you will have to keep trying pairs of numbers until you get as pair that works,
L = 2W + 6 since the length L is 6 more than twice the width, W.
2(L + W) = 84 since that is the perimeter
2L - 4W = 12
2L + 2W = 84
6W = 72
W = 12
L = 30
Thank you for your help!!
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