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<div class="add">

<a NAME="E1:13_1_1"/>
 <a href="xcmplx_0.html#K4">-</a> 1 <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default">2 <a href="xcmplx_0.html#K3">*</a> <span class="p2">(<span class="default"><a href="xcmplx_0.html#K4">-</a> 1</span>)</span></span>)</span> <a href="xcmplx_0.html#K2">+</a> 1
 
;<br/>
<b>then reconsider </b><font color="Maroon">e</font> =  <a href="xcmplx_0.html#K4">-</a> 1 as  <a href="abian.html#V1">odd</a> <a href="int_1.html#NM1">Integer</a> ;<br/>
<a NAME="E3:13_1_1"/>
not <font color="Maroon">e</font> <a href="xcmplx_0.html#K3">*</a> <font color="Maroon">n</font> is <a href="abian.html#V1">even</a>
 
;<br/>
<b>hence </b><a NAME="E4:13_1_1"/>
not  <a href="xcmplx_0.html#K4">-</a> <font color="Maroon">n</font> is <a href="abian.html#V1">even</a>
 ;<br/>


</div>
