Subtract 20/8 from 21/4
1st number: 5 1/4, 2nd number: 2 4/8
21/4 - 20/8 is 11/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
21/4 = 21 × 2/4 × 2 = 42/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
20/8 = 20 × 1/8 × 1 = 20/8 - Subtract the two like fractions:
42/8 - 20/8 = 42 - 20/8 = 22/8 - After reducing the fraction, the answer is 11/4
- In mixed form: 23/4
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