Subtract 3/81 from 36/7
1st number: 5 1/7, 2nd number: 3/81
36/7 - 3/81 is 965/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
36/7 = 36 × 81/7 × 81 = 2916/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
3/81 = 3 × 7/81 × 7 = 21/567 - Subtract the two like fractions:
2916/567 - 21/567 = 2916 - 21/567 = 2895/567 - After reducing the fraction, the answer is 965/189
- In mixed form: 520/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/7-3/81 36/7-6/81 36/14-3/81 36/7-9/81 36/21-3/81 36/7-15/81 36/35-3/81 36/7-21/81 36/49-3/81