Subtract 36/12 from 35/21
1st number: 1 14/21, 2nd number: 3 0/12
35/21 - 36/12 is -4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
35/21 = 35 × 4/21 × 4 = 140/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
36/12 = 36 × 7/12 × 7 = 252/84 - Subtract the two like fractions:
140/84 - 252/84 = 140 - 252/84 = -112/84 - After reducing the fraction, the answer is -4/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-36/12 35/21-72/12 35/42-36/12 35/21-36/24 35/63-36/12 35/21-36/60 35/21-36/84