trosehall617 trosehall617

25-01-2018
Mathematics

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The length of a rectangle is 4 cm less than three times the width. the perimeter is 64cm. find the width and length

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frenchiegirl frenchiegirl

28-01-2018

largeur = x
longueur = 3 x - 4

2 (x + 3 x - 4 ) = 64
2 x + 6 x - 8 = 64
8 x = 64 + 8
8 x = 72
x= 9

largeur = 9 et longueur = 23

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