Subtract 1/28 from 81/15
1st number: 5 6/15, 2nd number: 1/28
81/15 - 1/28 is 751/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
81/15 = 81 × 28/15 × 28 = 2268/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
1/28 = 1 × 15/28 × 15 = 15/420 - Subtract the two like fractions:
2268/420 - 15/420 = 2268 - 15/420 = 2253/420 - After reducing the fraction, the answer is 751/140
- In mixed form: 551/140
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