Subtract 54/21 from 20/63
1st number: 20/63, 2nd number: 2 12/21
20/63 - 54/21 is -142/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
20/63 = 20 × 1/63 × 1 = 20/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
54/21 = 54 × 3/21 × 3 = 162/63 - Subtract the two like fractions:
20/63 - 162/63 = 20 - 162/63 = -142/63
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