Subtract 9/42 from 15/10
1st number: 1 5/10, 2nd number: 9/42
15/10 - 9/42 is 9/7.
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,
9/42 = 9 × 5/42 × 5 = 45/210 - Subtract the two like fractions:
315/210 - 45/210 = 315 - 45/210 = 270/210 - After reducing the fraction, the answer is 9/7
- In mixed form: 12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10-9/42 15/10-18/42 15/20-9/42 15/10-9/84 45/10-9/42 15/10-27/42 15/30-9/42 75/10-9/42 15/10-45/42 15/50-9/42 15/10-63/42 15/70-9/42