Subtract 21/28 from 20/9
1st number: 2 2/9, 2nd number: 21/28
20/9 - 21/28 is 53/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
20/9 = 20 × 28/9 × 28 = 560/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
21/28 = 21 × 9/28 × 9 = 189/252 - Subtract the two like fractions:
560/252 - 189/252 = 560 - 189/252 = 371/252 - After reducing the fraction, the answer is 53/36
- In mixed form: 117/36
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