Subtract 81/10 from 20/4
1st number: 5 0/4, 2nd number: 8 1/10
20/4 - 81/10 is -31/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
20/4 = 20 × 5/4 × 5 = 100/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
81/10 = 81 × 2/10 × 2 = 162/20 - Subtract the two like fractions:
100/20 - 162/20 = 100 - 162/20 = -62/20 - After reducing the fraction, the answer is -31/10
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