2(4-1.9z)=0.8-0.2z
8 – 3.8z = 0.8 – 0.2z
– 3,8z + 0,2z = 0,8 – 8
-3.6z = -7.2
z = 2
8-3.8z = 0.8-0.2z
-3.6z=-7.2
z=2
2(4-1.9z)=0.8-0.2z
8 – 3.8z = 0.8 – 0.2z
– 3,8z + 0,2z = 0,8 – 8
-3.6z = -7.2
z = 2
2(4-1.9z)=0.8-0.2z
8-3.8z = 0.8-0.2z
-3.6z=-7.2
z=2