Réponse :
[tex]bonsoir\\\\8 x = 11\\x = 11/8\\\\\\x + 10 = 2\\x = - 8 \\\\4 x + 3 = 31\\4 x = 31 - 3 = 28\\x = 7 \\\\5 x - 9 = 11\\5 x = 20\\x = 4 \\\\\\6 x + 28 = 10 x \\6 x - 10 x = - 28\\- 4 x = - 28\\x = 7 \\\\7 x + 5 = 4 x + 14\\7 x - 4 x = 14 - 5 \\3 x = 9 \\x = 9/3 = 3 \\\\[/tex]
Explications étape par étape :
