#### Answer

$-5, -1, 0$

#### Work Step by Step

Add 2x to both sides of the inequality:
$1-2x+2x \ge 5x+2x
\\1 \ge 7x$
Divide both sides of the inequality by $7$:
$\dfrac{1}{7} \ge \dfrac{7x}{7}
\\\dfrac{1}{7} \ge x
\\x \le \dfrac{1}{7}$
Thus, the elements of $S$ that satisfy the inequality are:
$-5, -1, 0$