Subtract 4/70 from 2/40
2/40 - 4/70 is -1/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
2/40 = 2 × 7/40 × 7 = 14/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
4/70 = 4 × 4/70 × 4 = 16/280 - Subtract the two like fractions:
14/280 - 16/280 = 14 - 16/280 = -2/280 - After reducing the fraction, the answer is -1/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/40-4/70 2/40-8/70 2/80-4/70 6/40-4/70 2/40-12/70 10/40-4/70 2/40-20/70 14/40-4/70 2/40-28/70