Subtract 9/81 from 70/50
1st number: 1 20/50, 2nd number: 9/81
70/50 - 9/81 is 58/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 81 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 50 × 81 = 4050,
70/50 = 70 × 81/50 × 81 = 5670/4050 - Likewise, for the 2nd fraction, since 81 × 50 = 4050,
9/81 = 9 × 50/81 × 50 = 450/4050 - Subtract the two like fractions:
5670/4050 - 450/4050 = 5670 - 450/4050 = 5220/4050 - After reducing the fraction, the answer is 58/45
- In mixed form: 113/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/50-18/81 70/50-27/81 70/50-45/81 70/50-63/81