Subtract 2/70 from 3/20
3/20 - 2/70 is 17/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
3/20 = 3 × 7/20 × 7 = 21/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
2/70 = 2 × 2/70 × 2 = 4/140 - Subtract the two like fractions:
21/140 - 4/140 = 21 - 4/140 = 17/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-2/70 3/20-4/70 3/40-2/70 9/20-2/70 3/20-6/70 3/60-2/70 15/20-2/70 3/20-10/70 21/20-2/70 3/20-14/70