Evaluate: (c)/(2)-1 <= 1

Expression: $\frac{ c }{ 2 }-1 \leq 1$

Multiply both sides of the inequality by $2$

$c-2 \leq 2$

Move the constant to the right-hand side and change its sign

$c \leq 2+2$

Add the numbers

$\begin{align*}&c \leq 4 \\&\begin{array} { l }c \in \left\langle-\infty, 4\right]\end{array}\end{align*}$