Subtract 70/9 from 70/18
1st number: 3 16/18, 2nd number: 7 7/9
70/18 - 70/9 is -35/9.
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,
70/9 = 70 × 2/9 × 2 = 140/18 - Subtract the two like fractions:
70/18 - 140/18 = 70 - 140/18 = -70/18 - After reducing the fraction, the answer is -35/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/36-70/9 70/18-70/18 70/54-70/9 70/18-70/27 70/90-70/9 70/18-70/45 70/18-70/63