Let the system of linear equations x+y+ k z=2; 2 x+3 y-z=1; 3 x+4 y +2 z= k have infinitely many solutions. Then the system ( k +1) x+(2 k -1) y=7;…

Let the system of linear equations $$\begin{aligned} & x+y+\mathrm{k} z=2 \\ & 2 x+3 y-z=1 \\ & 3 x+4 \mathrm{y}+2 z=\mathrm{k} \end{aligned} $$ have infinitely many solutions. Then the system $$\begin{aligned} & (\mathrm{k}+1) x+(2 \mathrm{k}-1) y=7 \\ & (2 \mathrm{k}+1) x+(\mathrm{k}+5) y=10 \end{aligned} $$ has: