Question

Gary's backyard is in the shape of a rectangle. his backyard is completely surrounded by 480 feet of fencing. The length of his backyard is 18 feet longer than its width. What is the area of Gary's backyard in square feet?
bobpursley
480=2L+2W
L-18=W

480=2(18+W) + 2W
solve for w, then L, then L x W for area
I think W is 111 and L is 129

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