Answer:
12
Explanation:
The equation can be represented by this, with x equaling "the number":
3x-2=34
 +2 +2 
We are trying to isolate the x, so we can add 2 to both sides, to keep the equation equal.
3x=36
Now we have to divide both sides by 3 to isolate the x
 
 

the answer is:
x=12