Subtract 21/28 from 15/2
1st number: 7 1/2, 2nd number: 21/28
15/2 - 21/28 is 27/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 2 × 14 = 28,
15/2 = 15 × 14/2 × 14 = 210/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
21/28 = 21 × 1/28 × 1 = 21/28 - Subtract the two like fractions:
210/28 - 21/28 = 210 - 21/28 = 189/28 - After reducing the fraction, the answer is 27/4
- In mixed form: 63/4
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