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Fractions calculation：
Enter the fractions calculation formula directly and click the "Next" button to get the calculation answer.
It does not support mathematical functions (including trigonometric functions) and can only calculate the addition, subtraction, multiplication and division of two fractions. The fraction line is indicated by "/".
Enter the fractions calculation formula directly and click the "Next" button to get the calculation answer.
It does not support mathematical functions (including trigonometric functions) and can only calculate the addition, subtraction, multiplication and division of two fractions. The fraction line is indicated by "/".
Current location：Mathematical operation > History of fraction calculation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 fraction calculations
[ 1/1 Fraction calculation ]
Question type: Fractional subtraction
Original question: 5/99-1/1980
Solution:
5 99 | － | 1 1980 |
Divide the least common multiple 1980 by the denominator 99 of the minuend to get 20
Multiply the numerator 5 and denominator 99 of the subtracted number by 20
Then divide the least common multiple 1980 by the denominator 1980 of the subtraction to get 1
Multiply the subtracted numerator 1 and denominator 1980 by 1 at the same time
| = | 100 1980 | － | 1 1980 |
| = | 99 1980 |
| = | 1 |
| = | 1 20 |