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Sagot :

VINS

Réponse :

[tex]bonjour\\\\3 x - 7 = 5\\3 x = 5 + 7 \\3 x = 12 \\x = 4 \\\\2 x + 17 = 5 x + 2\\2 x - 5 x = 2 - 17\\- 3 x = - 15 \\x = 5 \\\\9 x - 3 = 7 x + 5 \\9 x - 7 x = 5 + 3 \\2 x = 8\\x = 4 \\\\[/tex]

Explications étape par étape :

Résolvons ces équations

3x - 7 = 5

3x = 5 + 7 = 12

x = 12/3 = 4

9 = 7x - 19

9 + 19 = 28 = 7x

x = 28/7 = 4

2x + 17 = 5x + 2

2x - 5x = 2 - 17

-3x = -15

3x = 15

x = 15/3 = 5

9x - 3 = 7x + 5

9x - 7x = 5 + 3

2x = 8

x = 8/2 = 4

donc l'intrus est l'équation 2x + 17 = 5x + 2

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