Subtract 28/56 from 18/63
18/63 - 28/56 is -3/14.
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,
18/63 = 18 × 8/63 × 8 = 144/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
28/56 = 28 × 9/56 × 9 = 252/504 - Subtract the two like fractions:
144/504 - 252/504 = 144 - 252/504 = -108/504 - After reducing the fraction, the answer is -3/14
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