Subtract 15/20 from 64/5
1st number: 12 4/5, 2nd number: 15/20
64/5 - 15/20 is 241/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
64/5 = 64 × 4/5 × 4 = 256/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
15/20 = 15 × 1/20 × 1 = 15/20 - Subtract the two like fractions:
256/20 - 15/20 = 256 - 15/20 = 241/20 - In mixed form: 121/20
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