B times the reciprocal of a number, the product is 4 and 2 / 3 It's due in a minute I don't want equation. I haven't learned that difficult equation yet. If there is no formula, please tell me the solution or analysis.

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• 1. If M and N are reciprocal to each other, then M / 5 * n / 9=
• 2. A times b times C equals 1, so a, B, and C are reciprocal, right?
• 3. When B is not equal to 0, the reciprocal of 1 / 4 times B is ()
• 4. What's the result of the reciprocal of 4 / 9 plus 2 / 3 times 3 / 4?
• 5. A and B are reciprocal to each other, a / B / 2 = ()
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• 10. If la-3l and LB + 2L are opposite to each other, find a + B + 5
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• 12. What is the difference between the reciprocal of a number and the product of this number and 15 / 7?
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