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: 3/20-5/18

    Solution:
     
3
20
 -  
5
18
    Divide two fractions with defferent denominators:The denominators of two fractions are 20 and 18 respectively,their least common multiple is 180
    Divide the least common multiple 180 by the denominator 20 of the minuend to get 9
    Multiply the numerator 3 and denominator 20 of the subtracted number by 9
    Then divide the least common multiple 180 by the denominator 18 of the subtraction to get 10
    Multiply the subtracted numerator 5 and denominator 18 by 10 at the same time
    = 
27
180
 -  
50
180
Calculation result:
    =
23
180



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