Subtract 15/12 from 3/40
1st number: 3/40, 2nd number: 1 3/12
3/40 - 15/12 is -47/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
3/40 = 3 × 3/40 × 3 = 9/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
15/12 = 15 × 10/12 × 10 = 150/120 - Subtract the two like fractions:
9/120 - 150/120 = 9 - 150/120 = -141/120 - After reducing the fraction, the answer is -47/40
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