Subtract 5/48 from 70/81
70/81 - 5/48 is 985/1296.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 48 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 81 × 16 = 1296,
70/81 = 70 × 16/81 × 16 = 1120/1296 - Likewise, for the 2nd fraction, since 48 × 27 = 1296,
5/48 = 5 × 27/48 × 27 = 135/1296 - Subtract the two like fractions:
1120/1296 - 135/1296 = 1120 - 135/1296 = 985/1296
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/81-10/48 70/81-5/96 70/81-15/48 70/81-25/48 70/81-35/48