Question

x,y,z rezulta x-y supra 2= y+ z = 7 supra 6 si x+ 2z = 48

Answer 1

x-y/2=y+z=7
x-y/2=7
x=7+y/2
z=7-y
inlocuim in  x+2z=48
7+y/2+2(7-y)=48
14+y+28-4y=96
3y=42-96=-54
y=-18
x=7-9=-2
z=7-(-18)=25