SOLUTION: the formula for the perimeter of a rectangle is P=2L +2w where L is length and w is width. A rectangle has a perimeter of 24 inches. find its dimensions if its length is 3 inches

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Question 343743: the formula for the perimeter of a rectangle is P=2L +2w where L is length and w is width. A rectangle has a perimeter of 24 inches. find its dimensions if its length is 3 inches greater than its width
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
2L%2B2W=24
L%2BW=12
.
.
.
L=W%2B3
Substituting,
W%2B3%2BW=12
2W%2B3=12
2W=9
highlight%28W=9%2F2%29inches
Then
L=9%2F2%2B6%2F2
highlight%28L=15%2F2%29inches