Answer:
a=5
Step-by-step explanation:
To solve for a, we need to get a by itself.
To do this, we need to do the opposite of what is being done to the equation, and what we do on one side, has to be done on the other.
18-2a=8
Subtract 18 from both sides
18-18 -2a= 8-18
-2a= -10
Divide both sides by -2
-2a/-2=-10/-2
a=5
