The answer is -30 <span><span><span>(9)</span><span>(2)</span></span>−<span><span>(24)</span><span>(2)</span></span></span><span>=<span>18−<span><span>(24)</span><span>(2)</span></span></span></span><span>=<span>18−48</span></span><span>=<span>−<span>30</span></span></span>