Subtract 42/27 from 21/2
1st number: 10 1/2, 2nd number: 1 15/27
21/2 - 42/27 is 161/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 2 × 27 = 54,
21/2 = 21 × 27/2 × 27 = 567/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
42/27 = 42 × 2/27 × 2 = 84/54 - Subtract the two like fractions:
567/54 - 84/54 = 567 - 84/54 = 483/54 - After reducing the fraction, the answer is 161/18
- In mixed form: 817/18
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