Resposta :
[tex] - 3x = 24[/tex]
[tex]x = - \frac{24}{3} [/tex]
[tex] \boxed{x = - 8}[/tex]
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→ Cálculo :
[tex]\\{\huge{\boxed{\begin{array}{lr} {-3x=24} \\ \\ {x=-\frac{24}{3} }\\ \\ \boxed{\red{x=-8}} \\\end{array}}}}\\[/tex]