Subtract 81/7 from 36/12
1st number: 3 0/12, 2nd number: 11 4/7
36/12 - 81/7 is -60/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
36/12 = 36 × 7/12 × 7 = 252/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
81/7 = 81 × 12/7 × 12 = 972/84 - Subtract the two like fractions:
252/84 - 972/84 = 252 - 972/84 = -720/84 - After reducing the fraction, the answer is -60/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/12-81/7 36/24-81/7 36/12-81/14 36/12-81/21 36/60-81/7 36/12-81/35 36/84-81/7 36/12-81/49