Subtract 12/21 from 2/36
2/36 - 12/21 is -65/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
2/36 = 2 × 7/36 × 7 = 14/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
12/21 = 12 × 12/21 × 12 = 144/252 - Subtract the two like fractions:
14/252 - 144/252 = 14 - 144/252 = -130/252 - After reducing the fraction, the answer is -65/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/36-12/21 2/36-24/21 2/72-12/21 2/36-12/42 6/36-12/21 2/36-36/21 2/36-12/63 10/36-12/21 2/36-60/21 14/36-12/21 2/36-84/21