They are inverse operations
also you can think of subtracting as just adding a negative number.
they both have something to do with positive and negative
who discovered addition and subtraction.
Addition and subtraction are reverse operations.
definiton of addition and subtraction
Addition is the inverse operation to subtraction.
Addition and subtraction are inverse functions.
Subtraction can be seen as the inverse operation to addition.
Subtraction is the addition of a negative number.
You don't. You can check addition with subtraction or subtraction with addition, since subtraction is the opposite of addition. Similary, you can check division with multiplication, or vice versa.
Addition is a sum and so is subtraction. So there's your answer!
addition and subtraction
d-a-s division-addition-subtraction