Subtract 90/18 from 70/6
1st number: 11 4/6, 2nd number: 5 0/18
70/6 - 90/18 is 20/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 6 × 3 = 18,
70/6 = 70 × 3/6 × 3 = 210/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
90/18 = 90 × 1/18 × 1 = 90/18 - Subtract the two like fractions:
210/18 - 90/18 = 210 - 90/18 = 120/18 - After reducing the fraction, the answer is 20/3
- In mixed form: 62/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12-90/18 70/6-90/36 70/18-90/18 70/6-90/54 70/30-90/18 70/42-90/18