Löse das lineare Gleichungssystem.


`{(60x,-,20y,-,3z,+,90w,=,-84),(-36x,+,15y,+,2z,-,54w,=,50),(-18x,+,6y,+,z,-,27w,=,25),(60x,-,20y,-,3z,+,93w,=,-81):}`

x =  
y =  
z =  
w =