Subtract 15/9 from 70/18
1st number: 3 16/18, 2nd number: 1 6/9
70/18 - 15/9 is 20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
70/18 = 70 × 1/18 × 1 = 70/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
15/9 = 15 × 2/9 × 2 = 30/18 - Subtract the two like fractions:
70/18 - 30/18 = 70 - 30/18 = 40/18 - After reducing the fraction, the answer is 20/9
- In mixed form: 22/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18-30/9 70/36-15/9 70/18-15/18 70/18-45/9 70/54-15/9 70/18-15/27 70/18-75/9 70/90-15/9 70/18-15/45 70/18-15/63