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bonjour
[tex]- x = 8 \\x = - 8 \\\\6 x = 2 \\x = 2/6 = 1/3 \\\\x + 3 x + 4 x = 26 \\8 x = 26\\x = 26/8 = 13 /4 \\\\- 3 x + x - 7 x = 513 \\- 9 x = 513 \\x = - 513/9 = - 57[/tex]
bonne soirée
bonjour
[tex]- x = 8 \\x = - 8 \\\\6 x = 2 \\x = 2/6 = 1/3 \\\\x + 3 x + 4 x = 26 \\8 x = 26\\x = 26/8 = 13 /4 \\\\- 3 x + x - 7 x = 513 \\- 9 x = 513 \\x = - 513/9 = - 57[/tex]
bonne soirée