<PRE><B>Question 911649</B>
H-13=5


H-13&lt;font color=&quot;blue&quot;&gt;+13&lt;/font&gt;=5&lt;font color=&quot;blue&quot;&gt;+13&lt;/font&gt; ... Add 13 to both sides.


H+0=18


H = &lt;font color=&quot;red&quot;&gt;18&lt;/font&gt;</PRE>