# How do you solve 2x - 3 >21?

$x > 12$, written in Interval form, $x \in \left(12 , \infty\right) .$
Adding $3$ on both sides, we get, $2 x - 3 + 3 > 21 + 3$, i.e., $2 x > 24$
Next to isolate $x$ on $L H S$, we multiply throughout by $\frac{1}{2}$, keeping in mind that as $\frac{1}{2}$ is $+ v e$, the order will not be affected.
Hence, $x > 12$, written in Interval form, $x \in \left(12 , \infty\right) .$