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<b>let </b><font color="Maroon">A</font> be   <a href="matrix_1.html#NM1">Matrix</a> of <a href="numbers.html#K1">REAL</a> , <font color="Maroon">B</font> be   <a href="matrix_1.html#NM1">Matrix</a> of <a href="numbers.html#K1">REAL</a> ;<br/>

<a NAME="E1:42"/>
<font color="Maroon">A</font> <a href="matrixr1.html#K3" target="_self">+</a> <font color="Maroon">B</font> <a href="hidden.html#R1">=</a>  <a href="matrixr1.html#K2" target="_self">MXF2MXR</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="matrixr1.html#K1" target="_self">MXR2MXF</a> <font color="Maroon">A</font></span>)</span> <a href="matrix_3.html#K3">+</a> <span class="p2">(<span class="default"><a href="matrixr1.html#K1" target="_self">MXR2MXF</a> <span class="p3">(<span class="default"><a href="matrixr1.html#K4" target="_self">-</a> <span class="p4">(<span class="default"><a href="matrixr1.html#K4" target="_self">-</a> <font color="Maroon">B</font></span>)</span></span>)</span></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="matrix_4.html#T1">MATRIX_4:1</a></i>;<br/>
<b>hence </b><a NAME="E2:42"/>
<font color="Maroon">A</font> <a href="matrixr1.html#K5" target="_self">-</a> <span class="p1">(<span class="default"><a href="matrixr1.html#K4" target="_self">-</a> <font color="Maroon">B</font></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">A</font> <a href="matrixr1.html#K3" target="_self">+</a> <font color="Maroon">B</font>
 <b>by </b><i><a class="ref" href="matrix_4.html#D1">MATRIX_4:def 1</a></i>;<br/>


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