The z is 5
−2⋅z=−8+18
-
2
⋅
z
=
8
+
18
Simplify :
−2⋅z=10
10
Dividing by the variable coefficient :
z=−
z=−5
5
The solution of equation
2⋅z−18−4⋅z=−8
4
is
[−5]
