Subtract 42/20 from 15/2
1st number: 7 1/2, 2nd number: 2 2/20
15/2 - 42/20 is 27/5.
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,
15/2 = 15 × 10/2 × 10 = 150/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
42/20 = 42 × 1/20 × 1 = 42/20 - Subtract the two like fractions:
150/20 - 42/20 = 150 - 42/20 = 108/20 - After reducing the fraction, the answer is 27/5
- In mixed form: 52/5
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