Subtract 12/20 from 3/24
3/24 - 12/20 is -19/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 20 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 20 × 6 = 120,
12/20 = 12 × 6/20 × 6 = 72/120 - Subtract the two like fractions:
15/120 - 72/120 = 15 - 72/120 = -57/120 - After reducing the fraction, the answer is -19/40
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