Subtract 21/12 from 70/14
1st number: 5 0/14, 2nd number: 1 9/12
70/14 - 21/12 is 13/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 14 × 6 = 84,
70/14 = 70 × 6/14 × 6 = 420/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
21/12 = 21 × 7/12 × 7 = 147/84 - Subtract the two like fractions:
420/84 - 147/84 = 420 - 147/84 = 273/84 - After reducing the fraction, the answer is 13/4
- In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/14-42/12 70/28-21/12 70/14-21/24 70/14-63/12 70/42-21/12 70/14-21/36 70/14-21/60 70/98-21/12 70/14-21/84