Subtract 7/40 from 3/24
3/24 - 7/40 is -1/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
3/24 = 3 × 5/24 × 5 = 15/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Subtract the two like fractions:
15/120 - 21/120 = 15 - 21/120 = -6/120 - After reducing the fraction, the answer is -1/20
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