Answer
$(-\infty,4.7)$
Work Step by Step
$5x\lt-23.5\longrightarrow$ Solve for x by dividing both sides by 5.
$5x\div5\lt-23.5\div5\longrightarrow$ Simplify.
$x\lt4.7$
This is written in interval notation as $(-\infty,4.7)$ where ) indicates the values in the solution set approach 4.7 but do not actually include 4.7.
