Subtract 20/10 from 81/40
1st number: 2 1/40, 2nd number: 2 0/10
81/40 - 20/10 is 1/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 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 10 × 4 = 40,
20/10 = 20 × 4/10 × 4 = 80/40 - Subtract the two like fractions:
81/40 - 80/40 = 81 - 80/40 = 1/40
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