Almost. Where you put -(-5) and then later on you say it’s -5. It’s not. It would be +5 or just 5 because - and - makes a plus :)
Answer: 
Step-by-step explanation:
total sides = 6
p (rolling a 1) = 
p (rolling a 2) = 
Note:
or - add
and - multiply
∴ 
∴ 
hence, p (rolling a 1 or 2) = 