SOLUTION: The perimeter of a rectangle is 100 feet. If its length is 2 feet longer than three times its width, find the length and width. (MUST USE EITHER ADDITION OR SUBSTITUTION METHOD.)

Question 322662: The perimeter of a rectangle is 100 feet. If its length is 2 feet longer than three times its width, find the length and width. (MUST USE EITHER ADDITION OR SUBSTITUTION METHOD.)
All I want to know is what the second equation is.
First equation should be (x=length, y=width)
2x+2y=100
Answer by QH(50) (Show Source): You can put this solution on YOUR website!
if you assign (x=length, y=width) to equation 1, then the second, "length is 2 feet longer than three times its width",() would be
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