D=-9 Let's solve your equation step-by-step.<span><span><span>d3</span>+10</span>=7</span>Step 1: Simplify both sides of the equation.<span><span><span><span>13</span>d</span>+10</span>=7</span>Step 2: Subtract 10 from both sides.<span><span><span><span><span>13</span>d</span>+10</span>−10</span>=<span>7−10</span></span><span><span><span>13</span>d</span>=<span>−3</span></span>Step 3: Multiply both sides by 3.<span><span>3*<span>(<span><span>13</span>d</span>)</span></span>=<span><span>(3)</span>*<span>(<span>−3</span>)</span></span></span><span>d=<span>−9</span></span>Answer:<span>d=<span>−<span>9 Hope it helps and mark as brainliest!</span></span></span>
