[tex]bonjour\\\\4 a + 3 = a - 8\\4 a - a = - 8 - 3\\3 a = - 11 \\a = - 11/3\\\\\\x + 1 = 5 x + 2\\x - 5 x = 2 - 1\\- 4 x = 1 \\x = - 1/4 \\\\- 5 c - 3 = 2 c\\- 5 c - 2c = 3\\- 7 c = 3 \\c = - 3/7 \\\\6 x - 4 = 3 x + 14 \\6 x - 3 x = 14 + 4\\3 x = 18\\x = 6 \\\\[/tex]
allez termine les dernières, c'est pareil
