Question

Which inequality is equivalent to the following? 5 x/2+ 3 < 12

Answer 1

We can isolate x to find an equivalent inequality:

$\begin{gathered} \frac{5}{2}\cdot x+3<12 \\ \frac{5}{2}\cdot x<12-3 \\ x<9\cdot\frac{2}{5} \\ x<\frac{18}{5} \end{gathered}$