Subtract 21/12 from 15/2
1st number: 7 1/2, 2nd number: 1 9/12
15/2 - 21/12 is 23/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 2 × 6 = 12,
15/2 = 15 × 6/2 × 6 = 90/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
21/12 = 21 × 1/12 × 1 = 21/12 - Subtract the two like fractions:
90/12 - 21/12 = 90 - 21/12 = 69/12 - After reducing the fraction, the answer is 23/4
- In mixed form: 53/4
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