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Add 45 to the numerator of the score 911. To make the score still equal to 911, add 45 to the denominator______ ．
If you add 45 to the numerator of the fraction 911, the numerator is 9 + 45 = 54, which is equivalent to the numerator 9 × 6. To keep the size of the fraction unchanged, according to the basic properties of the fraction, the denominator should also be multiplied by 6, 11 × 6 = 66, 66-11 = 55
A fraction, its denominator divided by 5 is equal to 31, its denominator minus 2 can be divided into 51. What is the fraction?
Come and answer quickly, the right one will be sent
Denominator divided by 5 equals 31, denominator = 5 * 31 = 155
The denominator minus 2 = 153
It can be divided into one in fifty-one, molecule = 153 / 51 = 3
The score is 3 / 155
After subtracting the same natural number from the numerator and denominator of the fraction 47 / 51, it can be divided into 3 / 5 to find the natural number
Let this natural number be X
（47-X）/（51-X）=3/5、
5（47-X）=3（51-X）
235-5X=153-3X、
2X=82、
X=41
For a fraction, the sum of numerator and denominator is 51. If 3 is subtracted from both numerator and denominator, the new fraction will be about 1 / 4, and the original fraction will be?
Answer: 14 / 41
Subtracting 5 from both the numerator and denominator of the original fraction, the sum of the numerator and denominator of the new fraction is 51-3-3 = 45. The new fraction is about 1 / 4, which means that the denominator is 4 times of the numerator. The only fraction that meets these two conditions is 9 and 36. Then the numerator and denominator of the original fraction are 9 + 5 = 14 and 36 + 5 = 41, so the original fraction is 14 / 41
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