Subtract 3/40 from 81/28
1st number: 2 25/28, 2nd number: 3/40
81/28 - 3/40 is 789/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
81/28 = 81 × 10/28 × 10 = 810/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
3/40 = 3 × 7/40 × 7 = 21/280 - Subtract the two like fractions:
810/280 - 21/280 = 810 - 21/280 = 789/280 - In mixed form: 2229/280
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