Subtract 27/15 from 42/63
1st number: 42/63, 2nd number: 1 12/15
42/63 - 27/15 is -17/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 15 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
27/15 = 27 × 21/15 × 21 = 567/315 - Subtract the two like fractions:
210/315 - 567/315 = 210 - 567/315 = -357/315 - After reducing the fraction, the answer is -17/15
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