Solve the system of the following equations  $\frac{2}{x}+\frac{3}{y}+\frac{10}{z}=4$ ; $\frac{4}{x}-\frac{6}{y}+\frac{5}{z}=1$  ; $\frac{6}{x}+\frac{9}{y}-\frac{20}{z}=2$

If the system of equations  $k x+y+2 z=1$ ; $3 x-y-2 z=2$ ; $-2 x-2 y-4 z=3$ has infinitely many solutions, then $k$ is equal to ……….

Examine the consistency of the system of equations. $x+y+z=1$ ; $2 x+3 y+2 z=2$ ; $a x+a y+2 a z=4$

Solve system of linear equations, using matrix method. $4 x-3 y=3$ ; $3 x-5 y=7$

Solve system of linear equations, using matrix method.

$5 x+2 y=3$ $3 x+2 y=5$