Subtract 28/45 from 3/10
3/10 - 28/45 is -29/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
3/10 = 3 × 9/10 × 9 = 27/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
28/45 = 28 × 2/45 × 2 = 56/90 - Subtract the two like fractions:
27/90 - 56/90 = 27 - 56/90 = -29/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/10-28/45 3/10-56/45 3/20-28/45 3/10-28/90 9/10-28/45 3/10-84/45 3/30-28/45 15/10-28/45 3/50-28/45 21/10-28/45 3/70-28/45