Subtract 70/30 from 15/12
1st number: 1 3/12, 2nd number: 2 10/30
15/12 - 70/30 is -13/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
15/12 = 15 × 5/12 × 5 = 75/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
70/30 = 70 × 2/30 × 2 = 140/60 - Subtract the two like fractions:
75/60 - 140/60 = 75 - 140/60 = -65/60 - After reducing the fraction, the answer is -13/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12-70/30 15/24-70/30 15/12-70/60 45/12-70/30 15/36-70/30 15/12-70/90 75/12-70/30 15/60-70/30 15/84-70/30