Subtract 14/81 from 30/70
30/70 - 14/81 is 145/567.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
30/70 = 30 × 81/70 × 81 = 2430/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
14/81 = 14 × 70/81 × 70 = 980/5670 - Subtract the two like fractions:
2430/5670 - 980/5670 = 2430 - 980/5670 = 1450/5670 - After reducing the fraction, the answer is 145/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70-14/81 30/70-28/81 90/70-14/81 30/70-42/81 30/70-70/81 30/70-98/81