Subtract 2/18 from 80/30
1st number: 2 20/30, 2nd number: 2/18
80/30 - 2/18 is 23/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
80/30 = 80 × 3/30 × 3 = 240/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
2/18 = 2 × 5/18 × 5 = 10/90 - Subtract the two like fractions:
240/90 - 10/90 = 240 - 10/90 = 230/90 - After reducing the fraction, the answer is 23/9
- In mixed form: 25/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30-4/18 80/60-2/18 80/30-2/36 80/30-6/18 80/90-2/18 80/30-2/54 80/30-10/18 80/30-2/90 80/30-14/18