Subtract 15/81 from 24/70
24/70 - 15/81 is 149/945.
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,
24/70 = 24 × 81/70 × 81 = 1944/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
15/81 = 15 × 70/81 × 70 = 1050/5670 - Subtract the two like fractions:
1944/5670 - 1050/5670 = 1944 - 1050/5670 = 894/5670 - After reducing the fraction, the answer is 149/945
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/70-15/81 24/70-30/81 72/70-15/81 24/70-45/81 24/70-75/81