Subtract 81/63 from 27/20
1st number: 1 7/20, 2nd number: 1 18/63
27/20 - 81/63 is 9/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
27/20 = 27 × 63/20 × 63 = 1701/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
81/63 = 81 × 20/63 × 20 = 1620/1260 - Subtract the two like fractions:
1701/1260 - 1620/1260 = 1701 - 1620/1260 = 81/1260 - After reducing the fraction, the answer is 9/140
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