Subtract 28/42 from 15/10
1st number: 1 5/10, 2nd number: 28/42
15/10 - 28/42 is 5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
15/10 = 15 × 21/10 × 21 = 315/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
28/42 = 28 × 5/42 × 5 = 140/210 - Subtract the two like fractions:
315/210 - 140/210 = 315 - 140/210 = 175/210 - After reducing the fraction, the answer is 5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10-28/42 15/10-56/42 15/20-28/42 15/10-28/84 45/10-28/42 15/10-84/42 15/30-28/42 75/10-28/42 15/50-28/42 15/70-28/42