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Sagot :

VINS

Réponse :

bonsoir

x + 7/3 = 5/7

x  = 5/7 - 7/3

21 x /21 = 15/21 - 49/21

21 x = - 34

x = -34/21

- y = - 7.2

y = 7.2

- x /12 = 7/3

- 3 x = 84

x = - 28

5 + 6 x = - x - 9

6 x + x = - 9 - 5

7 x = - 14

x = - 2

Explications étape par étape

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