Subtract 15/4 from 20/8
1st number: 2 4/8, 2nd number: 3 3/4
20/8 - 15/4 is -5/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 4 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 8 × 1 = 8,
20/8 = 20 × 1/8 × 1 = 20/8 - Likewise, for the 2nd fraction, since 4 × 2 = 8,
15/4 = 15 × 2/4 × 2 = 30/8 - Subtract the two like fractions:
20/8 - 30/8 = 20 - 30/8 = -10/8 - After reducing the fraction, the answer is -5/4
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