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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: 2/4-30/123
Solution:
2 4 | － | 30 123 |
| = | 1 2 | - | 30 123 |
Reduce the subtractor by 3
| = | 1 2 | - | 10 41 |
| = | 1 2 | - | 10 41 |
Divide the least common multiple 82 by the denominator 2 of the minuend to get 41
Multiply the numerator 1 and denominator 2 of the subtracted number by 41
Then divide the least common multiple 82 by the denominator 41 of the subtraction to get 2
Multiply the subtracted numerator 10 and denominator 41 by 2 at the same time
| = | 41 82 | － | 20 82 |
| = | 21 82 |