Respuesta :

The initial expression is:

-40 = 10 - 10s

Subtracting 10 on both sides, we get:

- 40 - 10 = 10 - 10s - 10

-50 = - 10s

Dividing by -10, we get:

[tex]\begin{gathered} \frac{-50}{-10}=\frac{-10s}{-10} \\ 5=s \end{gathered}[/tex]

Answer: s = 5

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