Subtract 40/25 from 15/12
1st number: 1 3/12, 2nd number: 1 15/25
15/12 - 40/25 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 25 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
15/12 = 15 × 25/12 × 25 = 375/300 - Likewise, for the 2nd fraction, since 25 × 12 = 300,
40/25 = 40 × 12/25 × 12 = 480/300 - Subtract the two like fractions:
375/300 - 480/300 = 375 - 480/300 = -105/300 - After reducing the fraction, the answer is -7/20
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