Subtract 81/25 from 1/20
1st number: 1/20, 2nd number: 3 6/25
1/20 - 81/25 is -319/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
1/20 = 1 × 5/20 × 5 = 5/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
81/25 = 81 × 4/25 × 4 = 324/100 - Subtract the two like fractions:
5/100 - 324/100 = 5 - 324/100 = -319/100
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