@IQTestBrain Properties of addition
Addition has two key properties:
•Commutative law: a + b = b + a
•Associative law: (a + b) + c = a + (b + c)
These apply only to addition (not directly to subtraction).
@IQTestBrain Subtraction is not a separate operation
In mathematics, subtraction is defined as a special case of addition:
a - b = a + (-b)
That means subtraction simply means adding the opposite.
So the expression
3000 - 2997 + 3
is actually
3000 + (-2997) +3