Subtract 30/90 from 20/2
1st number: 10 0/2, 2nd number: 30/90
20/2 - 30/90 is 29/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
20/2 = 20 × 45/2 × 45 = 900/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
30/90 = 30 × 1/90 × 1 = 30/90 - Subtract the two like fractions:
900/90 - 30/90 = 900 - 30/90 = 870/90 - After reducing the fraction, the answer is 29/3
- In mixed form: 92/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/2-30/90 20/2-60/90 20/4-30/90 60/2-30/90 20/6-30/90 20/10-30/90 20/14-30/90