Subtract 81/60 from 7/20
1st number: 7/20, 2nd number: 1 21/60
7/20 - 81/60 is -1/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
7/20 = 7 × 3/20 × 3 = 21/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
81/60 = 81 × 1/60 × 1 = 81/60 - Subtract the two like fractions:
21/60 - 81/60 = 21 - 81/60 = -60/60 - After reducing the fraction, the answer is -1/1
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