Subtract 15/20 from 21/2
1st number: 10 1/2, 2nd number: 15/20
21/2 - 15/20 is 39/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
21/2 = 21 × 10/2 × 10 = 210/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
15/20 = 15 × 1/20 × 1 = 15/20 - Subtract the two like fractions:
210/20 - 15/20 = 210 - 15/20 = 195/20 - After reducing the fraction, the answer is 39/4
- In mixed form: 93/4
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