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<b>let </b><font color="Maroon">i</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="arytm_3.html#K7">RAT+</a> ;<br/>

<b>thus </b><font color="Maroon">i</font> <a href="arytm_3.html#K11">+</a> <font color="Maroon">i</font> = 
<span class="p1">(<span class="default"><a href="arytm_3.html#K14">one</a>  <a href="arytm_3.html#K12">*'</a> <font color="Maroon">i</font></span>)</span> <a href="arytm_3.html#K11">+</a> <font color="Maroon">i</font>
<b>by </b><i><a class="ref" href="arytm_3.html#T59">ARYTM_3:59</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="arytm_3.html#K14">one</a>  <a href="arytm_3.html#K12">*'</a> <font color="Maroon">i</font></span>)</span> <a href="arytm_3.html#K11">+</a> <span class="p1">(<span class="default"><a href="arytm_3.html#K14">one</a>  <a href="arytm_3.html#K12">*'</a> <font color="Maroon">i</font></span>)</span>
<b>by </b><i><a class="ref" href="arytm_3.html#T59">ARYTM_3:59</a></i>
<br/>.= 
<font color="Maroon">two</font> <a href="arytm_3.html#K12">*'</a> <font color="Maroon">i</font>
<b>by </b><i>, <a class="ref" href="arytm_3.html#T63">ARYTM_3:63</a></i>
;<br/>


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