Subtract 20/10 from 81/8
1st number: 10 1/8, 2nd number: 2 0/10
81/8 - 20/10 is 65/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
81/8 = 81 × 5/8 × 5 = 405/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
20/10 = 20 × 4/10 × 4 = 80/40 - Subtract the two like fractions:
405/40 - 80/40 = 405 - 80/40 = 325/40 - After reducing the fraction, the answer is 65/8
- In mixed form: 81/8
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