Subtract 28/10 from 81/4
1st number: 20 1/4, 2nd number: 2 8/10
81/4 - 28/10 is 349/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
81/4 = 81 × 5/4 × 5 = 405/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
28/10 = 28 × 2/10 × 2 = 56/20 - Subtract the two like fractions:
405/20 - 56/20 = 405 - 56/20 = 349/20 - In mixed form: 179/20
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