please answer my question fast
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this is the answer.
Step-by-step explanation:
6. 4 / 9 + 2 / 7 = 28 + 18 / 63 = 46 / 63
7 . 5 / 7 + 1 / 3 = 15 + 7 / 21 = 22 / 21
8 . 4 / 3 - 1 / 2 = 8 - 3 / 6 = 5 / 6
9. 2 /5 - 1 / 6 = 12 - 5 / 30 =7 / 30
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