Subtract 70/21 from 10/36
1st number: 10/36, 2nd number: 3 7/21
10/36 - 70/21 is -55/18.
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,
70/21 = 70 × 12/21 × 12 = 840/252 - Subtract the two like fractions:
70/252 - 840/252 = 70 - 840/252 = -770/252 - After reducing the fraction, the answer is -55/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/36-70/21 10/72-70/21 10/36-70/42 30/36-70/21 10/36-70/63 50/36-70/21 70/36-70/21