For anyone that need help on the math problems.
First problem

This acts as a normal math problem. Just add them together.
Answer: 12
Second Problem

Now the game throws in a complication.
Hint 1: The symbol is similar to the Mantis God and the fours cancel each other.
Hint 2: What would the damage of the attacks be?
Answer: 4
Third Problem

Similar concept to the second problem. But with an extra step.
Hint 1: The first part is the same as the second problem.
Hint 2: Only use the outcome of the attacks,
Answer: 11