Subtract 48/42 from 15/28
1st number: 15/28, 2nd number: 1 6/42
15/28 - 48/42 is -17/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
15/28 = 15 × 3/28 × 3 = 45/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
48/42 = 48 × 2/42 × 2 = 96/84 - Subtract the two like fractions:
45/84 - 96/84 = 45 - 96/84 = -51/84 - After reducing the fraction, the answer is -17/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/28-48/42 15/28-96/42 15/56-48/42 15/28-48/84 45/28-48/42 15/84-48/42 75/28-48/42