Find x and y, if 
1
3
0
5
6
2 0
1
2
1
8
y
x






+
=












10 Solve the equation for x, y, z and t, if 
1
1
3
5
2
3
3
0
2
4
6
x
z
y
t
−






+
=












11 If 
2
1
10
3
1
5
x
y −
 




+
=
 




 




, find the values of x and y 12