X=-3 <span><span><span>−<span>2<span>(<span>x−3</span>)</span></span></span>−<span>2x</span></span>=18</span><span><span><span><span><span><span>(<span>−2</span>)</span><span>(x)</span></span>+<span><span>(<span>−2</span>)</span><span>(<span>−3</span>)</span></span></span>+</span>−<span>2x</span></span>=18</span>(Distribute)<span><span><span><span><span>−<span>2x</span></span>+6</span>+</span>−<span>2x</span></span>=18</span><span><span><span>(<span><span>−<span>2x</span></span>+<span>−<span>2x</span></span></span>)</span>+<span>(6)</span></span>=18</span>(Combine Like Terms)<span><span><span>−<span>4x</span></span>+6</span>=18</span><span><span><span>−<span>4x</span></span>+6</span>=18</span>Step 2: Subtract 6 from both sides.<span><span><span><span>−<span>4x</span></span>+6</span>−6</span>=<span>18−6</span></span><span><span>−<span>4x</span></span>=12</span>Step 3: Divide both sides by -4.<span><span><span>−<span>4x</span></span><span>−4</span></span>=<span>12<span>−<span>4</span></span></span></span>