Subtract 42/18 from 12/27
1st number: 12/27, 2nd number: 2 6/18
12/27 - 42/18 is -17/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 27 × 2 = 54,
12/27 = 12 × 2/27 × 2 = 24/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
42/18 = 42 × 3/18 × 3 = 126/54 - Subtract the two like fractions:
24/54 - 126/54 = 24 - 126/54 = -102/54 - After reducing the fraction, the answer is -17/9
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