Subtract 81/14 from 20/63
1st number: 20/63, 2nd number: 5 11/14
20/63 - 81/14 is -689/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 14 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
20/63 = 20 × 2/63 × 2 = 40/126 - Likewise, for the 2nd fraction, since 14 × 9 = 126,
81/14 = 81 × 9/14 × 9 = 729/126 - Subtract the two like fractions:
40/126 - 729/126 = 40 - 729/126 = -689/126
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