#### Answer

$s=70$

#### Work Step by Step

Using the properties of equality, the value of the variable that satisfies the given equation, $
s=35+0.5s
,$ is
\begin{array}{l}\require{cancel}
s-0.5s=35
\\\\
0.5s=35
\\\\
s=\dfrac{35}{0.5}
\\\\
s=70
.\end{array}