No, this is not simplified fully. The full answer would be <span>−7dk+14d−21k</span>−7, not <span>14d - 9 - 21k - 7dk + 2. So, it is not equivalent. </span><span> Excercise 4: </span><span>7dk (2 - 3 - 1) - 7 </span> Just multiply 7dk into (2) (-3) and (-1) you'd get: <span><span>−<span>14dk</span></span>+</span>−<span>7 after simplifying it fully. </span> p = parameter w = width
