If p = (-4/9) , q = (2/3) and r = (-8/11), then verily the following

If p = , q = and r = , then verily the following:
(i) p + (q + r) = (p + q) + r
(ii) p × q = q × p
(iii) p × (q + r) = p × q + p × r
(iv) (p + q) ÷ r = p ÷ r + q ÷ r.

Solution:

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