Mathematics
         
语言:中文    Language:English
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 "/".
    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: 3/21-2/24

    Solution:
     
3
21
 -  
2
24
    Reduce the minuend by 3
    = 
1
 3 
 21 
7
 -  
2
24

    Reduce the subtractor by 2
    = 
1
7
 -  
1
 2 
 24 
12

    = 
1
7
 -  
1
12
    Divide two fractions with defferent denominators:The denominators of two fractions are 7 and 12 respectively,their least common multiple is 84
    Divide the least common multiple 84 by the denominator 7 of the minuend to get 12
    Multiply the numerator 1 and denominator 7 of the subtracted number by 12
    Then divide the least common multiple 84 by the denominator 12 of the subtraction to get 7
    Multiply the subtracted numerator 1 and denominator 12 by 7 at the same time
    = 
12
84
 -  
7
84
Calculation result:
    =
5
84



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