Subtract 20/24 from 3/9
3/9 - 20/24 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
3/9 = 3 × 8/9 × 8 = 24/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
20/24 = 20 × 3/24 × 3 = 60/72 - Subtract the two like fractions:
24/72 - 60/72 = 24 - 60/72 = -36/72 - After reducing the fraction, the answer is -1/2
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