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Sagot :

Réponse :

Bonsoir,

Explications étape par étape

AB/15 = 7/3

AB * 3 = 7 * 15

AB * 3 = 105

AB = 105/3

AB = 35

CD/3 = 7

CD = 7 * 3

CD = 21

8/GH = 2/5

GH * 2 = 8 * 5

GH * 2 = 40

GH = 40/2

GH = 20

IJ/4.2 = 4.2/3.6

IJ * 3.6 = 4.2 * 4.2

IJ * 3.6 = 17.64

IJ = 17.64/3.6

IJ = 4.9

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