title: Python sum first element of a list of lists
body: <p>Is there any way to plus the first element of a list easily
  Wat I need to do is something like this:</p>
  
  <pre><code>Lista1 = [[5,7,6,4,3], [8,7,6,14,5],[5,7,8,6,9]]
  </code></pre>
  
  <p>Result </p>
  
  <pre><code>18  21  20  24  17
  </code></pre>