Subtract 10/14 from 30/18
1st number: 1 12/18, 2nd number: 10/14
30/18 - 10/14 is 20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 14 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
30/18 = 30 × 7/18 × 7 = 210/126 - Likewise, for the 2nd fraction, since 14 × 9 = 126,
10/14 = 10 × 9/14 × 9 = 90/126 - Subtract the two like fractions:
210/126 - 90/126 = 210 - 90/126 = 120/126 - After reducing the fraction, the answer is 20/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18-10/14 30/18-20/14 30/36-10/14 30/18-10/28 90/18-10/14 30/18-30/14 30/54-10/14 30/18-10/42 30/18-50/14 30/90-10/14 30/18-10/70 30/18-70/14 30/18-10/98