Subtract 2/72 from 80/18
1st number: 4 8/18, 2nd number: 2/72
80/18 - 2/72 is 53/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
80/18 = 80 × 4/18 × 4 = 320/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
2/72 = 2 × 1/72 × 1 = 2/72 - Subtract the two like fractions:
320/72 - 2/72 = 320 - 2/72 = 318/72 - After reducing the fraction, the answer is 53/12
- In mixed form: 45/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18-4/72 80/36-2/72 80/18-6/72 80/54-2/72 80/18-10/72 80/90-2/72 80/18-14/72