Question

verify commutativity of addition of rational numbers for 4 upon 9 and 7upon -12​

Answer 1

Answer:

The word "commutative" comes from "commute" or "move around", so the Commutative Property is the one that refers to moving stuff around. For addition, the rule is "a + b = b + a"; in numbers, this means 2 + 3 = 3 + 2. For multiplication, the rule is "ab = ba"; in numbers, this means 2×3 = 3×2.

Verification

(4/9) + (7/-12) = (7/-12) + (4/9)

=> -13/36 = -13/36.

L.H.S = R.H.S

Hence Verified.

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