Subtract 42/63 from 3/12
3/12 - 42/63 is -5/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
3/12 = 3 × 21/12 × 21 = 63/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
42/63 = 42 × 4/63 × 4 = 168/252 - Subtract the two like fractions:
63/252 - 168/252 = 63 - 168/252 = -105/252 - After reducing the fraction, the answer is -5/12
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