Réponse :
bonjour
[tex]- 2 + x = 5 \\x = 5 + 2\\x = 7 \\\\x + 9 = 16\\x = 16 - 9 \\x = 7 \\\\6 x = 15 \\x = 15/6\\\\- 5 x = 24 \\x = - 24/5\\\\\\4 x + 3 x = 49\\7 x = 49 \\x = 7\\\\- 2 x + 7 x = 36\\5 x = 36\\x = 36 /5[/tex]
Explications étape par étape
