Subtract 20/18 from 1/63
1st number: 1/63, 2nd number: 1 2/18
1/63 - 20/18 is -23/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
1/63 = 1 × 2/63 × 2 = 2/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
20/18 = 20 × 7/18 × 7 = 140/126 - Subtract the two like fractions:
2/126 - 140/126 = 2 - 140/126 = -138/126 - After reducing the fraction, the answer is -23/21
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