Question

–2x – 13 = 8x + 7

Answer 1

\[\begin{array}{l} -2 x-13=8 x+7 \\ \text{add }(13-8 x)\text{ \to both sides} \\ -10 x=20 \\ \text{Divide both sides by }-10 \\ x=-2 \\\end{array}\]