Subtract 15/70 from 9/12
9/12 - 15/70 is 15/28.
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,
9/12 = 9 × 35/12 × 35 = 315/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
15/70 = 15 × 6/70 × 6 = 90/420 - Subtract the two like fractions:
315/420 - 90/420 = 315 - 90/420 = 225/420 - After reducing the fraction, the answer is 15/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12-15/70 9/12-30/70 9/24-15/70 27/12-15/70 9/12-45/70 9/36-15/70 45/12-15/70 9/12-75/70 9/60-15/70 63/12-15/70 9/84-15/70