Subtract 2/30 from 81/28
1st number: 2 25/28, 2nd number: 2/30
81/28 - 2/30 is 1187/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
81/28 = 81 × 15/28 × 15 = 1215/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
2/30 = 2 × 14/30 × 14 = 28/420 - Subtract the two like fractions:
1215/420 - 28/420 = 1215 - 28/420 = 1187/420 - In mixed form: 2347/420
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