Subtract 42/12 from 40/54
1st number: 40/54, 2nd number: 3 6/12
40/54 - 42/12 is -149/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 54 × 2 = 108,
40/54 = 40 × 2/54 × 2 = 80/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
42/12 = 42 × 9/12 × 9 = 378/108 - Subtract the two like fractions:
80/108 - 378/108 = 80 - 378/108 = -298/108 - After reducing the fraction, the answer is -149/54
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