Subtract 28/30 from 40/10
1st number: 4 0/10, 2nd number: 28/30
40/10 - 28/30 is 46/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
40/10 = 40 × 3/10 × 3 = 120/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
28/30 = 28 × 1/30 × 1 = 28/30 - Subtract the two like fractions:
120/30 - 28/30 = 120 - 28/30 = 92/30 - After reducing the fraction, the answer is 46/15
- In mixed form: 31/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10-28/30 40/10-56/30 40/20-28/30 40/10-28/60 40/10-84/30 40/30-28/30 40/10-28/90 40/50-28/30 40/70-28/30