Subtract 10/28 from 81/20
1st number: 4 1/20, 2nd number: 10/28
81/20 - 10/28 is 517/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
81/20 = 81 × 7/20 × 7 = 567/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
10/28 = 10 × 5/28 × 5 = 50/140 - Subtract the two like fractions:
567/140 - 50/140 = 567 - 50/140 = 517/140 - In mixed form: 397/140
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