Subtract 20/28 from 40/10
1st number: 4 0/10, 2nd number: 20/28
40/10 - 20/28 is 23/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 10 × 14 = 140,
40/10 = 40 × 14/10 × 14 = 560/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
20/28 = 20 × 5/28 × 5 = 100/140 - Subtract the two like fractions:
560/140 - 100/140 = 560 - 100/140 = 460/140 - After reducing the fraction, the answer is 23/7
- In mixed form: 32/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10-20/28 40/10-40/28 40/20-20/28 40/10-20/56 40/10-60/28 40/30-20/28 40/10-20/84 40/50-20/28 40/70-20/28