Answer: 35 and 53
Step-by-step explanation
Let a and b represent the digits.
a-b = 2
a+b = 8
Add straight down to form the equation 2a = 10 which solves to a = 5.
Plug this into either equation to solve for b. Doing so should lead to b = 3.
Therefore the two possible answers are 35 and 53.