Subtract 81/10 from 20/30
1st number: 20/30, 2nd number: 8 1/10
20/30 - 81/10 is -223/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
20/30 = 20 × 1/30 × 1 = 20/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
81/10 = 81 × 3/10 × 3 = 243/30 - Subtract the two like fractions:
20/30 - 243/30 = 20 - 243/30 = -223/30
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