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Answer:
9
Explanation:
I think this is what this problem means:
3/4 × (4 8/9) + (1 11/21) / (2/7) =
= 3/4 × 44/9 + 32/21 × 7/2
= 132/36 + 112/21
= 924/252 + 1344/252
= 2268/252
= 1134/126
= 9
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