Subtract 81/54 from 20/5
1st number: 4 0/5, 2nd number: 1 27/54
20/5 - 81/54 is 5/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 5 × 54 = 270,
20/5 = 20 × 54/5 × 54 = 1080/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
81/54 = 81 × 5/54 × 5 = 405/270 - Subtract the two like fractions:
1080/270 - 405/270 = 1080 - 405/270 = 675/270 - After reducing the fraction, the answer is 5/2
- In mixed form: 21/2
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