Subtract 56/63 from 20/24
20/24 - 56/63 is -1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 24 × 21 = 504,
20/24 = 20 × 21/24 × 21 = 420/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
56/63 = 56 × 8/63 × 8 = 448/504 - Subtract the two like fractions:
420/504 - 448/504 = 420 - 448/504 = -28/504 - After reducing the fraction, the answer is -1/18
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