Subtract 21/80 from 28/5
1st number: 5 3/5, 2nd number: 21/80
28/5 - 21/80 is 427/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
28/5 = 28 × 16/5 × 16 = 448/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
21/80 = 21 × 1/80 × 1 = 21/80 - Subtract the two like fractions:
448/80 - 21/80 = 448 - 21/80 = 427/80 - In mixed form: 527/80
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