Subtract 27/28 from 45/63
45/63 - 27/28 is -1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
45/63 = 45 × 4/63 × 4 = 180/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
27/28 = 27 × 9/28 × 9 = 243/252 - Subtract the two like fractions:
180/252 - 243/252 = 180 - 243/252 = -63/252 - After reducing the fraction, the answer is -1/4
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