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<b>let </b><font color="Maroon">ADG</font> be   <a href="tdgroup.html#NM2">Uniquely_Two_Divisible_Group</a>;<br/><b>let </b><font color="Maroon">a</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">ADG</font>;<br/><b>let </b><font color="Maroon">c</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">ADG</font>;<br/>





<b>consider </b><font color="Maroon">b</font> being   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">ADG</font><b> such that </b><br/><a NAME="E2:20"/><i><font color="Green">E19</font></i>: 
<font color="Maroon">b</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">b</font> <a href="hidden.html#R1">=</a> <font color="Maroon">a</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">c</font>
 <b>by </b><i/>;<br/>
<b>take </b>
<font color="Maroon">b</font>
;<br/>

<b>thus </b><a NAME="E3:20"/>
<font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="tdgroup.html#R1" target="_self">==&gt;</a> <font color="Maroon">b</font>,<font color="Maroon">c</font>
 <b>by </b><i><a class="ref" href="tdgroup.html#T2" target="_self">Th2</a>, </i>;<br/>


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