When u add it stays the same but for subtraction u change the sign.
Example: 2- (-5)=7
The theoretical probability of (for example) rolling 5 ones is 1/(6^5) or approximately 0.013%. Because it doesn't matter which number we get five of we can multiply it by 6 to get 1/(6^5) or approximately 0.077%.
You can not put this on here :)
