what is .22222222222 as a fraction
$$\begin{bmatrix} 2 & 3 & 1 & 7 \\\\ 3 & 7 & -6 & -2 \\\\ 5 & 8 & 1 & k \end{bmatrix}$$
hacemeunacuentaoperacioncombinadaconfracciones
201825/975
970451/154
30/42
2163/309
15Y-4X-6Z=0
11Z-2X-6Y=0
321X-56Z-112Y=10500
7148/708
211555/515