Subtract 4/90 from 2/30
2/30 - 4/90 is 1/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
2/30 = 2 × 3/30 × 3 = 6/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
4/90 = 4 × 1/90 × 1 = 4/90 - Subtract the two like fractions:
6/90 - 4/90 = 6 - 4/90 = 2/90 - After reducing the fraction, the answer is 1/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/30-4/90 2/30-8/90 2/60-4/90 6/30-4/90 2/30-12/90 2/90-4/90 10/30-4/90 2/30-20/90 14/30-4/90 2/30-28/90