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