Subtract 15/42 from 48/21
1st number: 2 6/21, 2nd number: 15/42
48/21 - 15/42 is 27/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
48/21 = 48 × 2/21 × 2 = 96/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
15/42 = 15 × 1/42 × 1 = 15/42 - Subtract the two like fractions:
96/42 - 15/42 = 96 - 15/42 = 81/42 - After reducing the fraction, the answer is 27/14
- In mixed form: 113/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/21-15/42 48/21-30/42 48/42-15/42 48/21-15/84 48/21-45/42 48/63-15/42 48/21-75/42