Subtract 27/54 from 42/20
1st number: 2 2/20, 2nd number: 27/54
42/20 - 27/54 is 8/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
42/20 = 42 × 27/20 × 27 = 1134/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
27/54 = 27 × 10/54 × 10 = 270/540 - Subtract the two like fractions:
1134/540 - 270/540 = 1134 - 270/540 = 864/540 - After reducing the fraction, the answer is 8/5
- In mixed form: 13/5
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