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l=2w+14 P=88 WHAT IS LENGTH AND WIDTH

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2 Answers

I assume you are talking about a rectangle.
 
P = 2l + 2w
 
Substitute 2w+14 for l and 88 for P
 
88 = 2(2w+14) + 2w
88 = 4w+28+2w
88 = 6w+28
60 = 6w
w = 10
 
Plug w=10 into 2w+14.
 
l = 2*10+14 = 34
 

The perimeter is equal to the sum of all the sides and for a rectangle P = 2l +2w

Substitute in the given information and solve for w

88 = 2(2w + 14) + 2w

88 = 4w + 28 + 2w = 6w +28

60 = 6w

w = 10

solve for l

l = 2(10) + 14 = 34