Subtract 20/63 from 21/14
1st number: 1 7/14, 2nd number: 20/63
21/14 - 20/63 is 149/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 14 × 9 = 126,
21/14 = 21 × 9/14 × 9 = 189/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
20/63 = 20 × 2/63 × 2 = 40/126 - Subtract the two like fractions:
189/126 - 40/126 = 189 - 40/126 = 149/126 - In mixed form: 123/126
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