src="../../../../fig/mpt/modules/solvers/mpt_call_lcp6.png" alt="../../../../fig/mpt/modules/solvers/mpt_call_lcp6.png"> can be expressed only in non-basic variables <img src="../../../../fig/mpt/modules/solvers/mpt_call_lcp7.png" alt="../../../../fig/mpt/modules/solvers/mpt_call_lcp7.png"> as follows:
        <p class="programlistingindent"><img src="../../../../fig/mpt/modules/solvers/mpt_call_lcp51.png" alt="../../../../fig/mpt/modules/solvers/mpt_call_lcp51.png"></p>        
        where 
        <p cl