Subtract 27/20 from 21/2
1st number: 10 1/2, 2nd number: 1 7/20
21/2 - 27/20 is 183/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
21/2 = 21 × 10/2 × 10 = 210/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
27/20 = 27 × 1/20 × 1 = 27/20 - Subtract the two like fractions:
210/20 - 27/20 = 210 - 27/20 = 183/20 - In mixed form: 93/20
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