Subtract 42/12 from 81/5
1st number: 16 1/5, 2nd number: 3 6/12
81/5 - 42/12 is 127/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
81/5 = 81 × 12/5 × 12 = 972/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Subtract the two like fractions:
972/60 - 210/60 = 972 - 210/60 = 762/60 - After reducing the fraction, the answer is 127/10
- In mixed form: 127/10
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