Subtract 20/54 from 21/6
1st number: 3 3/6, 2nd number: 20/54
21/6 - 20/54 is 169/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 6 × 9 = 54,
21/6 = 21 × 9/6 × 9 = 189/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
20/54 = 20 × 1/54 × 1 = 20/54 - Subtract the two like fractions:
189/54 - 20/54 = 189 - 20/54 = 169/54 - In mixed form: 37/54
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