What does 4+-13=

what does 6--3=

I think

Q1 = - 9

Q2 = 9

Consider the sign closest to the number as the sign of the number, and the other one as the operation between the numbers.

Then + negative is the same as minus

and - negative is the same as plus

So 4 plus - 13 = 4 - 13 = - 9

6 minus - 3 = 6 + 3 = 9