Subtract 4/18 from 3/70
3/70 - 4/18 is -113/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
3/70 = 3 × 9/70 × 9 = 27/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
4/18 = 4 × 35/18 × 35 = 140/630 - Subtract the two like fractions:
27/630 - 140/630 = 27 - 140/630 = -113/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/70-4/18 3/70-8/18 3/70-4/36 9/70-4/18 3/70-12/18 3/70-4/54 15/70-4/18 3/70-20/18 3/70-4/90 21/70-4/18 3/70-28/18