Subtract 28/10 from 40/30
1st number: 1 10/30, 2nd number: 2 8/10
40/30 - 28/10 is -22/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
40/30 = 40 × 1/30 × 1 = 40/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
28/10 = 28 × 3/10 × 3 = 84/30 - Subtract the two like fractions:
40/30 - 84/30 = 40 - 84/30 = -44/30 - After reducing the fraction, the answer is -22/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30-28/10 40/30-56/10 40/60-28/10 40/30-28/20 40/30-84/10 40/90-28/10 40/30-28/30 40/30-28/50 40/30-28/70