like sign -just add and copy the sign of the integers
subtract the integers then copy the sign of the bigger integers.
change the sign of the subtrahend and proceed as in adding integers.
multiplication and Division
with like signs
the product or quotient is positive
the product or quotient is negative
by:jen Marie :)
fundamental operation is a ?
Addition, subtraction and multiplication.
Yes it is : a + b = b + a for all integers a and b. In fact , if an operation is called addition you can bet that it is commutative. It would be perverse to call an non-commutative operation addition.
No. It is not a group.
add subtract divide multiplication
The answer depends on what the operation is.
No, most cannot.
It provides closure under the binary operation of addition.