Write the system of equations as an augmented matrix
{
3
x
+
6
y
−
3
z
=
−
6
2
x
+
y
−
5
z
=
4
−
5
x
−
3
y
−
z
=
5
\displaystyle {\left\lbrace\begin{array}{c} {3}{x}+{6}{y}-{3}{z}=-{6}\\{2}{x}+{y}-{5}{z}={4}\\-{5}{x}-{3}{y}-{z}={5}\end{array}\right.}
⎩
⎨
⎧
3
x
+
6
y
−
3
z
=
−
6
2
x
+
y
−
5
z
=
4
−
5
x
−
3
y
−
z
=
5
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Enter each element of the matrix as number (like 5, -3, 2.2)