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Answer:
Explanation:
(28 : 7 + 6 : 3) × 1/2 =
(4 + 2) × 1/2 =
6 × 1/2 =
3
(multiplying by 1/2 means dividing by 2 in fact 1/2 = 0.5 and 6 x 0.5 = 3)
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