if substracting by two negatives your going to add ex: -2-(-5) it would be positive 7.
if your substracting with two differ numbers it you would substract and take the sign the sign of the biggest number.ex: 2+(-3) it would be-1 sice 3 is bigger than2 you take the sign of 3
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if they are two positive numbers, do it normally.
If there is a negative and a positive, change it to addition and switch the SECOND integer sign. Only works with two integers in a subtraction question.
Example: (-32)-(+2)= (-34) / (-32)+(-2)=(-34)
Integers are closed under subtraction, meaning that any subtraction problem with integers has a solution in the set of integers.
they both have something to do with positive and negative
Yes.
The answer depends on which binary operation you mean when you say "combining". Addition, subtraction, multiplication, division, exponentiation, etc.
Addition, subtraction and multiplication.