Subtract 7/40 from 2/12
2/12 - 7/40 is -1/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
2/12 = 2 × 10/12 × 10 = 20/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Subtract the two like fractions:
20/120 - 21/120 = 20 - 21/120 = -1/120
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