Subtract 90/63 from 81/20
1st number: 4 1/20, 2nd number: 1 27/63
81/20 - 90/63 is 367/140.
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,
81/20 = 81 × 63/20 × 63 = 5103/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
90/63 = 90 × 20/63 × 20 = 1800/1260 - Subtract the two like fractions:
5103/1260 - 1800/1260 = 5103 - 1800/1260 = 3303/1260 - After reducing the fraction, the answer is 367/140
- In mixed form: 287/140
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