Subtract 20/8 from 81/28
1st number: 2 25/28, 2nd number: 2 4/8
81/28 - 20/8 is 11/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
81/28 = 81 × 2/28 × 2 = 162/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
20/8 = 20 × 7/8 × 7 = 140/56 - Subtract the two like fractions:
162/56 - 140/56 = 162 - 140/56 = 22/56 - After reducing the fraction, the answer is 11/28
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