Subtract 81/28 from 4/30
1st number: 4/30, 2nd number: 2 25/28
4/30 - 81/28 is -1159/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
4/30 = 4 × 14/30 × 14 = 56/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
81/28 = 81 × 15/28 × 15 = 1215/420 - Subtract the two like fractions:
56/420 - 1215/420 = 56 - 1215/420 = -1159/420
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