Subtract 6/21 from 10/36
10/36 - 6/21 is -1/126.
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,
10/36 = 10 × 7/36 × 7 = 70/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
6/21 = 6 × 12/21 × 12 = 72/252 - Subtract the two like fractions:
70/252 - 72/252 = 70 - 72/252 = -2/252 - After reducing the fraction, the answer is -1/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/36-6/21 10/36-12/21 10/72-6/21 10/36-6/42 30/36-6/21 10/36-18/21 10/36-6/63 50/36-6/21 10/36-30/21 70/36-6/21 10/36-42/21