Pouvez vous m’aider ? merci ! 2x + 3 = -3x+ 8 -3x + 1 = 4x - 11

[tex]bonsoir\\\\\\2 x + 3 = - 3 x + 8\\2 x + 3 x = 8 - 3 \\5 x = 5\\x = 1\\\\\\- 3 x + 1 = 4 x - 11 \\- 3 x - 4 x = - 11 - 1 \\- 7 x = - 12\\x = 12/7 \\\\[/tex]

Réponse :

Bonsoir

      2x + 3 = -3x+ 8

<=> 2x + 3x = 8 - 3

<=> 5x = 5

<=> x = 1

      -3x + 1 = 4x - 11

<=> -3x -4x = -11 -1

<=> -7x = -12

<=> x = 12/7