Subtract 81/63 from 3/8
1st number: 3/8, 2nd number: 1 18/63
3/8 - 81/63 is -51/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 8 × 63 = 504,
3/8 = 3 × 63/8 × 63 = 189/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
81/63 = 81 × 8/63 × 8 = 648/504 - Subtract the two like fractions:
189/504 - 648/504 = 189 - 648/504 = -459/504 - After reducing the fraction, the answer is -51/56
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