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Sagot :

NAPOLITAINFR

Réponse :

e. 10x + 3 = 7x -1

3x = -4

x = -4/3

f. 3x = 8x + 16

-5x = 16

x = -16/5

Explications étape par étape :

VINS

bonjour

10 x + 3 = 7 x - 1

10 x - 7 x = - 1 - 3

3 x = - 4

x = - 4/3

3 x = 8 x + 16

3 x - 8 x = 16

- 5 x = 16

x = - 16/5  

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