Subtract 40/84 from 27/63
27/63 - 40/84 is -1/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
27/63 = 27 × 4/63 × 4 = 108/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
40/84 = 40 × 3/84 × 3 = 120/252 - Subtract the two like fractions:
108/252 - 120/252 = 108 - 120/252 = -12/252 - After reducing the fraction, the answer is -1/21
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