Mathematics
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           ☆1 fraction calculations

[ 1/1 Fraction calculation ]
    Question type: Fractional subtraction
    Original question: 1/10-1/30
    Solution:
     
1
10
 －  
1
30
    Divide two fractions with defferent denominators:The denominators of two fractions are 10 and 30 respectively,their least common multiple is 30
    Divide the least common multiple 30 by the denominator 10 of the minuend to get 3
    Multiply the numerator 1 and denominator 10 of the subtracted number by 3
    Then divide the least common multiple 30 by the denominator 30 of the subtraction to get 1
    Multiply the subtracted numerator 1 and denominator 30 by 1 at the same time
    = 
3
30
 －  
1
30
Calculation result:
    =
2
30
    The calculation result is reduced by 2
    =
1
 2 
 30 
15

    =
1
15




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