Subtract 2/70 from 7/28
7/28 - 2/70 is 31/140.
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,
7/28 = 7 × 5/28 × 5 = 35/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
2/70 = 2 × 2/70 × 2 = 4/140 - Subtract the two like fractions:
35/140 - 4/140 = 35 - 4/140 = 31/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28-2/70 7/28-4/70 7/56-2/70 21/28-2/70 7/28-6/70 7/84-2/70 35/28-2/70 7/28-10/70 49/28-2/70 7/28-14/70