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Sagot :

TEAMCE

Bonsoir,

Calculer x:

2/7 = 9/x

(2/7) * x = (9/x) * x

2x/7 = 9

(2x/7) * 7 = 9 * 7

2x = 63

x = 63/2 = 31,5

Bonne soirée.

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