Subtract 49/56 from 21/63
21/63 - 49/56 is -13/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
21/63 = 21 × 8/63 × 8 = 168/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
49/56 = 49 × 9/56 × 9 = 441/504 - Subtract the two like fractions:
168/504 - 441/504 = 168 - 441/504 = -273/504 - After reducing the fraction, the answer is -13/24
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