Subtract 2/40 from 1/70
1/70 - 2/40 is -1/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
1/70 = 1 × 4/70 × 4 = 4/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
2/40 = 2 × 7/40 × 7 = 14/280 - Subtract the two like fractions:
4/280 - 14/280 = 4 - 14/280 = -10/280 - After reducing the fraction, the answer is -1/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/70-2/40 1/70-4/40 1/70-2/80 3/70-2/40 1/70-6/40 5/70-2/40 1/70-10/40 7/70-2/40 1/70-14/40