Subtract 81/20 from 18/6
1st number: 3 0/6, 2nd number: 4 1/20
18/6 - 81/20 is -21/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 6 × 10 = 60,
18/6 = 18 × 10/6 × 10 = 180/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
81/20 = 81 × 3/20 × 3 = 243/60 - Subtract the two like fractions:
180/60 - 243/60 = 180 - 243/60 = -63/60 - After reducing the fraction, the answer is -21/20
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