Subtract 20/12 from 4/5
1st number: 4/5, 2nd number: 1 8/12
4/5 - 20/12 is -13/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
4/5 = 4 × 12/5 × 12 = 48/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
20/12 = 20 × 5/12 × 5 = 100/60 - Subtract the two like fractions:
48/60 - 100/60 = 48 - 100/60 = -52/60 - After reducing the fraction, the answer is -13/15
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