Write out the matirx equation for this given system of equations
{2b+2u5a=363b+2ua=102bu4a=23\displaystyle {\left\lbrace\begin{array}{ccccccc} -{2}{b}&+&{2}{u}&-&{5}{a}&=&{36}\\-{3}{b}&+&{2}{u}&-&{a}&=&{10}\\{2}{b}&-&{u}&-&{4}{a}&=&{23}\end{array}\right.}
 
 
 
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