Subtract 2/90 from 28/30
28/30 - 2/90 is 41/45.
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,
28/30 = 28 × 3/30 × 3 = 84/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
2/90 = 2 × 1/90 × 1 = 2/90 - Subtract the two like fractions:
84/90 - 2/90 = 84 - 2/90 = 82/90 - After reducing the fraction, the answer is 41/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30-2/90 28/30-4/90 28/60-2/90 84/30-2/90 28/30-6/90 28/90-2/90 28/30-10/90 28/30-14/90