Subtract 21/8 from 81/14
1st number: 5 11/14, 2nd number: 2 5/8
81/14 - 21/8 is 177/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 14 × 4 = 56,
81/14 = 81 × 4/14 × 4 = 324/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
21/8 = 21 × 7/8 × 7 = 147/56 - Subtract the two like fractions:
324/56 - 147/56 = 324 - 147/56 = 177/56 - In mixed form: 39/56
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