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<b>let </b><font color="Maroon">M</font> be   <a href="midsp_1.html#NM1">MidSp</a>;<br/><b>let </b><font color="Maroon">u1</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="midsp_1.html#K13" target="_self">setvect</a> <font color="Maroon">M</font>;<br/><b>let </b><font color="Maroon">v1</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="midsp_1.html#K13" target="_self">setvect</a> <font color="Maroon">M</font>;<br/><b>let </b><font color="Maroon">w1</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="midsp_1.html#K13" target="_self">setvect</a> <font color="Maroon">M</font>;<br/>







<b>reconsider </b><font color="Maroon">u</font> = <font color="Maroon">u1</font>, <font color="Maroon">v</font> = <font color="Maroon">v1</font>, <font color="Maroon">w</font> = <font color="Maroon">w1</font> as    <a href="midsp_1.html#M1" target="_self">Vector</a> of <font color="Maroon">M</font> <b>by </b><i><a class="ref" href="midsp_1.html#T24" target="_self">Th24</a></i>;<br/>
<a NAME="E2:65"/><i><font color="Green">E37</font></i>: 
<font color="Maroon">u1</font> <a href="midsp_1.html#K14" target="_self">+</a> <font color="Maroon">v1</font> <a href="hidden.html#R1">=</a> <font color="Maroon">u</font> <a href="midsp_1.html#K10" target="_self">+</a> <font color="Maroon">v</font>
 
<b>by </b><i><a class="ref" href="midsp_1.html#T25" target="_self">Th25</a></i>;<br/>
<a NAME="E3:65"/><i><font color="Green">E38</font></i>: 
<font color="Maroon">v1</font> <a href="midsp_1.html#K14" target="_self">+</a> <font color="Maroon">w1</font> <a href="hidden.html#R1">=</a> <font color="Maroon">v</font> <a href="midsp_1.html#K10" target="_self">+</a> <font color="Maroon">w</font>
 
<b>by </b><i><a class="ref" href="midsp_1.html#T25" target="_self">Th25</a></i>;<br/>
<b>thus </b><span class="p1">(<span class="default"><font color="Maroon">u1</font> <a href="midsp_1.html#K14" target="_self">+</a> <font color="Maroon">v1</font></span>)</span> <a href="midsp_1.html#K14" target="_self">+</a> <font color="Maroon">w1</font> = 
<span class="p1">(<span class="default"><font color="Maroon">u</font> <a href="midsp_1.html#K10" target="_self">+</a> <font color="Maroon">v</font></span>)</span> <a href="midsp_1.html#K10" target="_self">+</a> <font color="Maroon">w</font>
<b>by </b><i><a class="ref" href="midsp_1.html#T28" target="_self">Th28</a>, <a class="ref" href="midsp_1.html#T25" target="_self">Th25</a></i>
<br/>.= 
<font color="Maroon">u</font> <a href="midsp_1.html#K10" target="_self">+</a> <span class="p1">(<span class="default"><font color="Maroon">v</font> <a href="midsp_1.html#K10" target="_self">+</a> <font color="Maroon">w</font></span>)</span>
<b>by </b><i><a class="ref" href="midsp_1.html#T18" target="_self">Th18</a></i>
<br/>.= 
<font color="Maroon">u1</font> <a href="midsp_1.html#K14" target="_self">+</a> <span class="p1">(<span class="default"><font color="Maroon">v1</font> <a href="midsp_1.html#K14" target="_self">+</a> <font color="Maroon">w1</font></span>)</span>
<b>by </b><i><a class="ref" href="midsp_1.html#T29" target="_self">Th29</a>, <a class="ref" href="midsp_1.html#T25" target="_self">Th25</a></i>
;<br/>


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