Which of the following pair of mathematical statement is correct?
i. (10 + 8) + 9 = 10 + (8 + 9) ii. 10 + 8 x 9 = (10 + 8) x (10 + 9)
iii. 10 x (8 + 9) = (10 x 8) + (10 x 9)
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oh sorry I don't know it answer
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