Subtract 42/63 from 81/40
1st number: 2 1/40, 2nd number: 42/63
81/40 - 42/63 is 163/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
81/40 = 81 × 63/40 × 63 = 5103/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
42/63 = 42 × 40/63 × 40 = 1680/2520 - Subtract the two like fractions:
5103/2520 - 1680/2520 = 5103 - 1680/2520 = 3423/2520 - After reducing the fraction, the answer is 163/120
- In mixed form: 143/120
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