title: Simplifying the boolean expression (A && B) || (A && !B && C)
body: <p>I'm so confused currently while trying to simplify a boolean expression. I know the solution but not the correct way to achieve it.</p>
  <p>What law makes <code>(A &amp;&amp; B) || (A &amp;&amp; !B &amp;&amp; C)</code> the same as <code>(A &amp;&amp; B) || (A &amp;&amp; C)</code></p>
  <p>Why can i leave the <code>!B</code>?</p>