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The numerator and denominator of a true fraction are two consecutive natural numbers. If the denominator is added with 5, the resulting fraction will be about 5 / 7, and the original fraction will be?
Let the preceding numerator be x and the denominator be x + 1
be
x/(x+1+5) = 5/7
7x=5x+30
x=15
The original score was 15 / 16
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The numerator and denominator of a true fraction are two consecutive natural numbers. If 3 is added to the denominator, the fraction is 4 / 5, and the original fraction is?
1. When the numerator is greater than the denominator, let X be the denominator, then the numerator is (x + 1), so there is
(x + 1) / (x + 3) = 4 / 5, x = 7, so the element fraction is 8 / 7
2. If the denominator is greater than the numerator, let X be the numerator, then the denominator is (x + 1), and then
X / (x + 4) = 4 / 5, x = 16, so the original fraction is 16 / 17
In natural numbers from 1 to 9, how many different fractions can you get by taking odd number as numerator and even number as denominator
Among the natural numbers from 1 to 9, there are 5 odd numbers and 4 odd numbers
In the natural numbers from 1 to 9, taking the odd number as the numerator and the even number as the denominator, we can get the number of different fractions = 5X4 = 20
For a true fraction, the numerator and denominator are two continuous natural numbers. If 3 is added to the denominator, the fraction is 45. The original fraction is 45______ ．
If the molecules of this true fraction are x, then the denominator is x + 1, and the denominator plus 3 becomes x + 4, which can be obtained from the theme: X: (x + 4) = 4:5, and from the topic meaning: X: (x + 4) (X: (x + 4) = 4:5, and the following: X: (x + 4) (X: (x + 4) = 4:5, and from the topic meaning: X: (X: (x + 4) = 4:5, and the following: X: (X: (x + 4) = 4:5: 4:5:5, and from the topic meaning can be obtained: X: (X: (X: (X: (x + 4) 4: 4: 4:5:5:5, and & & nbsp; & nbsp; & & nbsp; & nbsp; & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & & nbsp; & nbsp; & & nbsp; & nbsp; & nbsp; & nbsp; & & nbsp; &X = 16; 16 + 1 = 17, so the original score is 1617. A: the original score is 1617
RELATED INFORMATIONS
- 1. The sum of the numerator and denominator of a simplest fraction is 62. If the numerator is reduced to 1 and the denominator is subtracted by 7, the new fraction will be reduced to 2 / 7. What is the original fraction?
- 2. When ABC is written as the simplest fraction, the sum of numerator and denominator is 58? Are you sure?
- 3. For a simplest fraction, the sum of numerator and denominator is 70. If the numerator and denominator are all reduced by 5, the original fraction can be obtained by 2 / 3
- 4. The sum of numerator and denominator of a fraction is 67. If 5 is added to each numerator and denominator, the ratio of numerator and denominator is 2:5, and the original fraction is 67___ ．
- 5. How much is added to the numerator and denominator of one thirteenth at the same time to divide it into about one third? 1. Don't solve the equation, but use the formula step by step (comprehensive formula can be listed). 2!
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- 10. A fraction is 13 / 27, the numerator plus a number, the denominator minus the same number, resulting in a band fraction of 2 and 1 / 3. What is the fraction?
- 11. The sum of the three simplest true fractions is 1 and 7 / 5. Their denominator is the same, and the numerator is three adjacent natural numbers. What are the three fractions
- 12. The sum of two continuous natural numbers is 21, and the least common multiple of the two numbers is______ ．
- 13. Add a same natural number to the numerator and denominator of 1 / 13 at the same time to get another fraction equal to 1 / 2. What is the natural number?
- 14. The sum of the three fractions is two and one seventh. The fractional units of the three fractions are the same. The numerator is a continuous natural number. What are the three fractions?
- 15. Add a number to the numerator and denominator of the fraction 1999 / 1997, and the new fraction is equal to 1999 / 2000?
- 16. A fraction is 13 out of 22. After adding the same number x to the numerator and denominator, the ratio of numerator to denominator is 3:2. What is x? - 40 is not right. I hope I can make a good list of the tests and work out the results;
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- 18. 1. Add a number to the 13 / 27 numerator, subtract the same number from the denominator, and the result is 7 / 3. Find this number 2. After converting 6 / 7 into a decimal, what is the 18th digit after the decimal point? What is the 18th digit above the 2008 digit? 3. The greatest common multiple of two numbers is 120, and the least common factor is 8. One of them is 24. What's the other number?
- 19. What is the number a when the denominator of 13 of 27 plus a and the denominator minus a equals seven thirds?
- 20. For a fraction, the sum of the numerator and denominator is 28. If the numerator subtracts 1, the fraction equals 2, and the original fraction is ()