Subtract 28/90 from 4/10
4/10 - 28/90 is 4/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
4/10 = 4 × 9/10 × 9 = 36/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
28/90 = 28 × 1/90 × 1 = 28/90 - Subtract the two like fractions:
36/90 - 28/90 = 36 - 28/90 = 8/90 - After reducing the fraction, the answer is 4/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/10-28/90 4/10-56/90 4/20-28/90 12/10-28/90 4/10-84/90 4/30-28/90 20/10-28/90 4/50-28/90 28/10-28/90 4/70-28/90