Question

Is the binary operation * defined on the set of integer Z bye the rule a*b=a-b+2 commmutative?

Answer 1

Answer:

a binary operation operation * on a set A is commutative if a * b = b * a, for all (a, b) ∈ A (non-empty set). Let addition be the operating binary operation for a = 8 and b = 9, a + b = 17 = b + a

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