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What is the dimensions of a rectangle if the length is 4 centimeters less than twice its width and the perimeter is 34 centimeters what is the dimensions of a rectangle?
you have two equations with two unknowns, length and width
let W = width and L = length
2W - 4 = L (1)
The perimeter is 2L + 2W
2L + 2W = 34 (2)
rearrange (1) and (2)
2W - L = 4
2W +2L = 34
multiply (1) both sides by 2
4W - 2L = 8
2W + 2L =34
add equations
6W = 42
W = 7
solve L from (2) by substituting W = 7
L = 10
What else can I help you with?
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