Subtract 21/10 from 1/2
1st number: 1/2, 2nd number: 2 1/10
1/2 - 21/10 is -8/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 2 × 5 = 10,
1/2 = 1 × 5/2 × 5 = 5/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
21/10 = 21 × 1/10 × 1 = 21/10 - Subtract the two like fractions:
5/10 - 21/10 = 5 - 21/10 = -16/10 - After reducing the fraction, the answer is -8/5
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