Subtract 3/56 from 21/63
21/63 - 3/56 is 47/168.
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,
3/56 = 3 × 9/56 × 9 = 27/504 - Subtract the two like fractions:
168/504 - 27/504 = 168 - 27/504 = 141/504 - After reducing the fraction, the answer is 47/168
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