Subtract 7/8 from 81/40
1st number: 2 1/40, 2nd number: 7/8
81/40 - 7/8 is 23/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
81/40 = 81 × 1/40 × 1 = 81/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
7/8 = 7 × 5/8 × 5 = 35/40 - Subtract the two like fractions:
81/40 - 35/40 = 81 - 35/40 = 46/40 - After reducing the fraction, the answer is 23/20
- In mixed form: 13/20
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