lass="va">b</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>   x[1] - 1*x[2]  =  2 </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 2*x[1] + 2*x[2]  =  1 </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 3*x[1]   + x[2]  =  3 </span>
<span class="r-plt img"><img src="plotEqn-1.png" alt="" width="700" height="433"></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># inconsistent equations</sp