Subtract 4/40 from 18/7
1st number: 2 4/7, 2nd number: 4/40
18/7 - 4/40 is 173/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
18/7 = 18 × 40/7 × 40 = 720/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
4/40 = 4 × 7/40 × 7 = 28/280 - Subtract the two like fractions:
720/280 - 28/280 = 720 - 28/280 = 692/280 - After reducing the fraction, the answer is 173/70
- In mixed form: 233/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/7-4/40 18/7-8/40 18/14-4/40 18/7-4/80 54/7-4/40 18/7-12/40 18/21-4/40 90/7-4/40 18/7-20/40 18/35-4/40 18/7-28/40 18/49-4/40