Subtract 18/30 from 21/9
1st number: 2 3/9, 2nd number: 18/30
21/9 - 18/30 is 26/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
18/30 = 18 × 3/30 × 3 = 54/90 - Subtract the two like fractions:
210/90 - 54/90 = 210 - 54/90 = 156/90 - After reducing the fraction, the answer is 26/15
- In mixed form: 111/15
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