Subtract 15/28 from 6/42
6/42 - 15/28 is -11/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
6/42 = 6 × 2/42 × 2 = 12/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
15/28 = 15 × 3/28 × 3 = 45/84 - Subtract the two like fractions:
12/84 - 45/84 = 12 - 45/84 = -33/84 - After reducing the fraction, the answer is -11/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42-15/28 6/42-30/28 6/84-15/28 6/42-15/56 18/42-15/28 6/42-45/28 6/42-15/84 30/42-15/28 6/42-75/28