Answer
$x\le-\dfrac{1}{3}$
Work Step by Step
Using the properties of inequality, the solution to the given inequality, $
7-3x\ge8
$, is
\begin{array}{l}\require{cancel}
-3x\ge8-7
\\\\
-3x\ge1
\\\\
x\le\dfrac{1}{-3}
\\\\
x\le-\dfrac{1}{3}
.\end{array}