SOLUTION: D + E = 16 feet. D is 4 feet longer than E. How do we set up this problem to solve?

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Question 606590: D + E = 16 feet. D is 4 feet longer than E. How do we set up this problem to solve?
Answer by asuar010(338) About Me  (Show Source):
You can put this solution on YOUR website!
D=E+4 so we can substitute and obtain E+E+4=16 so 2E=12 so E=6 and D=10