Subtract 21/54 from 7/2
1st number: 3 1/2, 2nd number: 21/54
7/2 - 21/54 is 28/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 2 × 27 = 54,
7/2 = 7 × 27/2 × 27 = 189/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Subtract the two like fractions:
189/54 - 21/54 = 189 - 21/54 = 168/54 - After reducing the fraction, the answer is 28/9
- In mixed form: 31/9
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