Subtract 18/5 from 81/8
1st number: 10 1/8, 2nd number: 3 3/5
81/8 - 18/5 is 261/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
81/8 = 81 × 5/8 × 5 = 405/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
18/5 = 18 × 8/5 × 8 = 144/40 - Subtract the two like fractions:
405/40 - 144/40 = 405 - 144/40 = 261/40 - In mixed form: 621/40
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