You can simplify the equation \(2x = -3 - 15\) to \(2x = -18\). Another way to express the equation is by stating it as:
\[ 2x + 18 = 0 \]
or by rearranging it:
\[ x = \frac{-18}{2} \]
which simplifies to
\[ x = -9 \].
So, one alternative way to present the original equation is \(2x + 18 = 0\).