Subtract 45/81 from 6/70
6/70 - 45/81 is -148/315.
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,
6/70 = 6 × 81/70 × 81 = 486/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
45/81 = 45 × 70/81 × 70 = 3150/5670 - Subtract the two like fractions:
486/5670 - 3150/5670 = 486 - 3150/5670 = -2664/5670 - After reducing the fraction, the answer is -148/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/70-45/81 6/70-90/81 18/70-45/81 30/70-45/81 42/70-45/81