1. (<span>13−m=2(m−4) </span>Regroup terms 2. Expand (<span>13−m=2m−<span>8) 3. </span></span>Add <span><span>m</span></span> to both sides (<span>13=2m−8+<span>m) 4. </span></span>Simplify (<span>2m−8+m</span> to <span><span><span>3m−8) 5. add 8 to both sides (13 + 8 = 3m) 6. </span></span></span>Simplify <span>13+8 to 21 7. </span>Divide both sides by <span><span>33</span></span> (21/3 = m) 8. simplify 21/3 to 7 (7 = m) 9. switch sides ( finally m = 7)
