Subtract 7/70 from 15/12
1st number: 1 3/12, 2nd number: 7/70
15/12 - 7/70 is 23/20.
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,
15/12 = 15 × 35/12 × 35 = 525/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
7/70 = 7 × 6/70 × 6 = 42/420 - Subtract the two like fractions:
525/420 - 42/420 = 525 - 42/420 = 483/420 - After reducing the fraction, the answer is 23/20
- In mixed form: 13/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12-7/70 15/12-14/70 15/24-7/70 45/12-7/70 15/12-21/70 15/36-7/70 75/12-7/70 15/12-35/70 15/60-7/70 15/12-49/70 15/84-7/70