VLet's solve for x.<span>m=<span><span>9+<span>3x</span></span>−<span>dx</span></span></span>Step 1: Flip the equation.<span><span><span><span>−<span>dx</span></span>+<span>3x</span></span>+9</span>=m
</span>Step 2: Add -9 to both sides.<span><span><span><span><span>−<span>dx</span></span>+<span>3x</span></span>+9</span>+<span>−9</span></span>=<span>m+<span>−9 </span></span></span><span><span><span>−<span>dx</span></span>+<span>3x</span></span>=<span>m−9
</span></span>Step 3: Factor out variable x.<span><span>x<span>(<span><span>−d</span>+3</span>)</span></span>=<span>m−9
</span></span><span>Step 4: Divide both sides by -d+3.