Subtract 21/70 from 70/12
1st number: 5 10/12, 2nd number: 21/70
70/12 - 21/70 is 83/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
70/12 = 70 × 35/12 × 35 = 2450/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
21/70 = 21 × 6/70 × 6 = 126/420 - Subtract the two like fractions:
2450/420 - 126/420 = 2450 - 126/420 = 2324/420 - After reducing the fraction, the answer is 83/15
- In mixed form: 58/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12-42/70 70/24-21/70 70/12-63/70 70/36-21/70 70/60-21/70 70/84-21/70