4x-y-5Z=1x+y-2Z=63x-2y-6Z=2Решить методом Крамера

4-1-5=1 1+1-2=6 3-2-6=2 ▲ =  [latex] \left[\begin{array}{ccc}4&1&5\\1&1&2\\3&2&6\end{array}\right] [/latex] = 24+10 - 6 - 15 - 16 - 6= 3 ▲1 = [latex] \left[\begin{array}{ccc}1&1&5\\6&1&2\\2&2&6\end{array}\right] [/latex] = 6 + 60 + 4 -10 - 4 - 36 = 20 ▲2 = [latex] \left[\begin{array}{ccc}4&1&5\\1&6&2\\3&2&6\end{array}\right] [/latex] = 144 + 10 + 6 - 90 - 16 - 6 = 48 ▲3 = [latex] \left[\begin{array}{ccc}4&1&1\\1&1&6\\3&2&2\end{array}\right] [/latex] = 8 + 2 + 18 - 3 - 48 - 2 = -25 x1=[latex] \frac{▲1}{▲} [/latex] = [latex] \frac{20}{3} [/latex] = 6.6 x2=[latex] \frac{▲2}{▲} [/latex] = [latex] \frac{48}{3} [/latex] = 16 x3=[latex] \frac{▲3}{▲} [/latex] = [latex] \frac{-25}{3} [/latex] = 8.3  Ответ:(6.6;16;8.3).