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Sagot :

VINS

Réponse :

bonjour

3 x + 2 = 8

3 x = 8 - 2

3 x = 6

x = 2

2 x - 8 = 12 - 3 x

2 x + 3 x = 12 + 8

5 x = 20

x = 4

3 x + 6 = x + 10

3 x - x = 10 - 6

2 x = 4

x = 2

12 - 2 x = 20 - 4 x

- 2 x +  4 x = 20 - 12

2 x = 8

x = 4

Explications étape par étape :

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