Subtract 75/63 from 21/56
1st number: 21/56, 2nd number: 1 12/63
21/56 - 75/63 is -137/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
75/63 = 75 × 8/63 × 8 = 600/504 - Subtract the two like fractions:
189/504 - 600/504 = 189 - 600/504 = -411/504 - After reducing the fraction, the answer is -137/168
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