istingindent"><img src="../../../../fig/mpt/modules/solvers/mpt_call_lcp53.png" alt="../../../../fig/mpt/modules/solvers/mpt_call_lcp53.png"></p>
        With the substitution
        <p class="programlistingindent"><img src="../../../../fig/mpt/modules/solvers/mpt_call_lcp54.png" alt="../../../../fig/mpt/modules/solvers/mpt_call_lcp54.png"></p>
        and putting back to <img src="../../../../fig/mpt/modules/solvers/mpt_call_lcp16.png" alt="../../../../fig/mpt/modules/solvers/mpt_call_lcp16.png"> we get
 