Subtract 4/90 from 2/10
2/10 - 4/90 is 7/45.
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,
2/10 = 2 × 9/10 × 9 = 18/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
4/90 = 4 × 1/90 × 1 = 4/90 - Subtract the two like fractions:
18/90 - 4/90 = 18 - 4/90 = 14/90 - After reducing the fraction, the answer is 7/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/10-4/90 2/10-8/90 2/20-4/90 6/10-4/90 2/10-12/90 2/30-4/90 2/10-20/90 2/50-4/90 14/10-4/90 2/10-28/90 2/70-4/90