Subtract 2/40 from 30/28
1st number: 1 2/28, 2nd number: 2/40
30/28 - 2/40 is 143/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
30/28 = 30 × 10/28 × 10 = 300/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
2/40 = 2 × 7/40 × 7 = 14/280 - Subtract the two like fractions:
300/280 - 14/280 = 300 - 14/280 = 286/280 - After reducing the fraction, the answer is 143/140
- In mixed form: 13/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28-2/40 30/28-4/40 30/56-2/40 30/28-2/80 90/28-2/40 30/28-6/40 30/84-2/40 30/28-10/40 30/28-14/40