Subtract 42/14 from 15/8
1st number: 1 7/8, 2nd number: 3 0/14
15/8 - 42/14 is -9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 14 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
15/8 = 15 × 7/8 × 7 = 105/56 - Likewise, for the 2nd fraction, since 14 × 4 = 56,
42/14 = 42 × 4/14 × 4 = 168/56 - Subtract the two like fractions:
105/56 - 168/56 = 105 - 168/56 = -63/56 - After reducing the fraction, the answer is -9/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/8-42/14 15/8-84/14 15/16-42/14 15/8-42/28 45/8-42/14 15/24-42/14 75/8-42/14 15/40-42/14 15/8-42/70 15/56-42/14 15/8-42/98