Subtract 7/63 from 81/20
1st number: 4 1/20, 2nd number: 7/63
81/20 - 7/63 is 709/180.
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,
7/63 = 7 × 20/63 × 20 = 140/1260 - Subtract the two like fractions:
5103/1260 - 140/1260 = 5103 - 140/1260 = 4963/1260 - After reducing the fraction, the answer is 709/180
- In mixed form: 3169/180
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