Subtract 3/8 from 81/60
1st number: 1 21/60, 2nd number: 3/8
81/60 - 3/8 is 39/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
81/60 = 81 × 2/60 × 2 = 162/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
3/8 = 3 × 15/8 × 15 = 45/120 - Subtract the two like fractions:
162/120 - 45/120 = 162 - 45/120 = 117/120 - After reducing the fraction, the answer is 39/40
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