Subtract 12/40 from 81/5
1st number: 16 1/5, 2nd number: 12/40
81/5 - 12/40 is 159/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
81/5 = 81 × 8/5 × 8 = 648/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
12/40 = 12 × 1/40 × 1 = 12/40 - Subtract the two like fractions:
648/40 - 12/40 = 648 - 12/40 = 636/40 - After reducing the fraction, the answer is 159/10
- In mixed form: 159/10
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