Subtract 20/90 from 70/3
1st number: 23 1/3, 2nd number: 20/90
70/3 - 20/90 is 208/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 3 × 30 = 90,
70/3 = 70 × 30/3 × 30 = 2100/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Subtract the two like fractions:
2100/90 - 20/90 = 2100 - 20/90 = 2080/90 - After reducing the fraction, the answer is 208/9
- In mixed form: 231/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/3-40/90 70/6-20/90 70/3-60/90 70/9-20/90 70/15-20/90 70/21-20/90