title: Specifying greater than inequality in scipy
body: <p>I've solved a simple LP problem where all constraints are "less than or equal to". </p>
  
  <p>I used scipy.optimize.linprog for those.</p>
  
  <p>The problem is when one or more of the constraints equation is "greater than or equal to". How do I specify that? I need to use the two-phase approach provided by scipy.optimize.linprog</p>
  
  <p>An example of such is:</p>
  
  <pre>
  
      7X1 + 4X2 + 9X3 ≥ 750                                                                              
      4X1 + 6X2 + 7X3 ≤ 40
      17X1 + 9X2 + 2.5X3 ≥ 3540                                                                              
      56X1 + 3X2 + 27X3 ≤ 6450
  
  
  </pre>