Réponse :
[tex]bonjour\\\\x + 4 = - 4\\x = - 4 - 4 \\x = - 8 \\\\5 x = - 5 \\x = - 1 \\\\x - 9 = - 9 \\x = - 9 + 9\\x = 0 \\\\x /2 = - 2 \\x = - 4 \\\\- x + 5 = 9 \\- x = 9 - 5 \\- x = 4 \\x = - 4 \\\\- x = 8 \\x = - 8 \\\\- x - 2 = 6 \\- x = 6 + 2 \\- x = 8 \\x = - 8 \\\\- x /7 = 7 \\- x = 49\\x = 49 \\\\[/tex]
Explications étape par étape :
