Subtract 40/27 from 42/12
1st number: 3 6/12, 2nd number: 1 13/27
42/12 - 40/27 is 109/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
42/12 = 42 × 9/12 × 9 = 378/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
40/27 = 40 × 4/27 × 4 = 160/108 - Subtract the two like fractions:
378/108 - 160/108 = 378 - 160/108 = 218/108 - After reducing the fraction, the answer is 109/54
- In mixed form: 21/54
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