Subtract 42/27 from 15/18
1st number: 15/18, 2nd number: 1 15/27
15/18 - 42/27 is -13/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
15/18 = 15 × 3/18 × 3 = 45/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
42/27 = 42 × 2/27 × 2 = 84/54 - Subtract the two like fractions:
45/54 - 84/54 = 45 - 84/54 = -39/54 - After reducing the fraction, the answer is -13/18
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