Subtract 15/70 from 9/28
9/28 - 15/70 is 3/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
9/28 = 9 × 5/28 × 5 = 45/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
15/70 = 15 × 2/70 × 2 = 30/140 - Subtract the two like fractions:
45/140 - 30/140 = 45 - 30/140 = 15/140 - After reducing the fraction, the answer is 3/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28-15/70 9/28-30/70 9/56-15/70 27/28-15/70 9/28-45/70 9/84-15/70 45/28-15/70 9/28-75/70 63/28-15/70