Subtract 21/20 from 27/2
1st number: 13 1/2, 2nd number: 1 1/20
27/2 - 21/20 is 249/20.
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,
27/2 = 27 × 10/2 × 10 = 270/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
21/20 = 21 × 1/20 × 1 = 21/20 - Subtract the two like fractions:
270/20 - 21/20 = 270 - 21/20 = 249/20 - In mixed form: 129/20
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