Subtract 4/30 from 81/20
1st number: 4 1/20, 2nd number: 4/30
81/20 - 4/30 is 47/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
81/20 = 81 × 3/20 × 3 = 243/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
4/30 = 4 × 2/30 × 2 = 8/60 - Subtract the two like fractions:
243/60 - 8/60 = 243 - 8/60 = 235/60 - After reducing the fraction, the answer is 47/12
- In mixed form: 311/12
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