title: Solving equations in a cell array
body: <p>I have some linear equations in a cell array like this ( The number of equations vary each time ) :</p>
  
  <pre><code>equs = { '2*X1+X2+6', '3*X2-X1' }
  </code></pre>
  
  <p>How can I solve these equation with Matlab?
  I can get my answer simply by this function :</p>
  
  <pre><code>ans = solve(equs(1), equs(2));
  </code></pre>
  
  <p>But, as the number of equations differ each time, I want this to be done automatically.</p>