Subtract 42/30 from 81/5
1st number: 16 1/5, 2nd number: 1 12/30
81/5 - 42/30 is 74/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
81/5 = 81 × 6/5 × 6 = 486/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Subtract the two like fractions:
486/30 - 42/30 = 486 - 42/30 = 444/30 - After reducing the fraction, the answer is 74/5
- In mixed form: 144/5
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