Subtract 27/20 from 3/70
1st number: 3/70, 2nd number: 1 7/20
3/70 - 27/20 is -183/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
3/70 = 3 × 2/70 × 2 = 6/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
27/20 = 27 × 7/20 × 7 = 189/140 - Subtract the two like fractions:
6/140 - 189/140 = 6 - 189/140 = -183/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/70-27/20 3/70-54/20 3/70-27/40 9/70-27/20 3/70-81/20 3/70-27/60 15/70-27/20 21/70-27/20