Subtract 2/20 from 40/28
1st number: 1 12/28, 2nd number: 2/20
40/28 - 2/20 is 93/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
40/28 = 40 × 5/28 × 5 = 200/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
2/20 = 2 × 7/20 × 7 = 14/140 - Subtract the two like fractions:
200/140 - 14/140 = 200 - 14/140 = 186/140 - After reducing the fraction, the answer is 93/70
- In mixed form: 123/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28-2/20 40/28-4/20 40/56-2/20 40/28-2/40 40/28-6/20 40/84-2/20 40/28-2/60 40/28-10/20 40/28-14/20