Subtract 42/40 from 20/63
1st number: 20/63, 2nd number: 1 2/40
20/63 - 42/40 is -923/1260.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 40 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 63 × 40 = 2520,
20/63 = 20 × 40/63 × 40 = 800/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
42/40 = 42 × 63/40 × 63 = 2646/2520 - Subtract the two like fractions:
800/2520 - 2646/2520 = 800 - 2646/2520 = -1846/2520 - After reducing the fraction, the answer is -923/1260
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