Four seventh of () is equal to one eighth of 320

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• 1. If a × 1 / 7 equals B × 1 / 5, then AB equals () to ()
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• 3. How much is 76 out of 77 times 75
• 4. Simple calculation of 1.25 times 8.08
• 5. Simple calculation of 2 divided by 8 / 5 multiplied by 24 / 25
• 6. How to 3 5, 1 1, the number can not be repeated, addition and subtraction good division can be appointed, the answer is equal to 24
• 7. The order of 1, 2, 3, 4 and 5 does not change. The result is equal to 10 plus, minus, good and divide Addition, subtraction, obedience and division cannot be used repeatedly
• 8. How many times how many times is five?
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• 10. How many meters is 230 cm equal to
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• 12. If a is 4:3 to B and B is 7:5 to C, what is a: B: C
• 13. If 3 / A and 7 / b are true fractions, and 3 / a plus 7 / B is about 1.38, how much is a / b?
• 14. What is a + B of a * B equal to? Is there a formula? Urgent This question is very important. I have done several questions, all related to this
• 15. What is the least common multiple of 8 and 9______ The greatest common factor is______ The least common multiple of 8 and 10 is______ The greatest common factor is______ ．
• 16. Find the greatest common factor of 30 and 45 by short division
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• 19. Factors of 12 and 30
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