[tex]bonjour\\\\8 b = 24 \\b = 3\\\\15 + x = 11\\x = 11 - 15\\x = - 4 \\\\a - 3 = - 12\\a = - 12 + 3\\a = - 9 \\\\10 a + 8 = 7 a + 14 \\10 a - 7 a = 14 - 8 \\3 a = 6 \\a = 2 \\\\6 x + 8 = 10 x - 19\\6 x - 10 x = - 19 - 8\\- 4 x = - 27 \\x = 27/4\\\\4 b + 8 = - 3 b + 3 \\4 b + 3 b = 3 - 8 \\7 b = - 5 \\b = - 5/7 \\\\5 x - 3 - 4 - 2 x = 8 \\3 x = 8 + 3 + 4 \\3 x = 15\\x = 5[/tex]
bonne soirée
