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Sagot :

Bonjour

[tex]5x + 7 = 3x \\ 5x - 3x = - 7 \\ 2x = - 7 \\ x = \frac{ - 7}{2} \\ x = - 3.5[/tex]

[tex]4x + 7 = 3x + 2 \\ 4x - 3x = 2 - 7 \\ x = - 5[/tex]

Bonne journée

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