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Subtraction is not commutative nor associative.
l like adding better than subtraction in maths
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.
They are different in the same way that subtraction of integers is different from their addition.
Addition and subtraction can be thought of as the same thing because subtracting a negative number is the same as adding it and adding a negative number is the same as subtracting it.