Question 33094
you know z=5


so, from 4y-3z=-11 we get
4y-3(5)=-11
4y-15=-11
4y=4
y = 1


And finally from 3x+2y+5z=33 we get 
3x+2(1)+5(5)=33
3x+2+25=33
3x+27=33
3x = 6
x = 2


So, solution is:
x=2
y=1
z=5


jon