Subtract 28/40 from 21/4
1st number: 5 1/4, 2nd number: 28/40
21/4 - 28/40 is 91/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
21/4 = 21 × 10/4 × 10 = 210/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
28/40 = 28 × 1/40 × 1 = 28/40 - Subtract the two like fractions:
210/40 - 28/40 = 210 - 28/40 = 182/40 - After reducing the fraction, the answer is 91/20
- In mixed form: 411/20
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