Subtract 15/60 from 9/70
9/70 - 15/60 is -17/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
9/70 = 9 × 6/70 × 6 = 54/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
15/60 = 15 × 7/60 × 7 = 105/420 - Subtract the two like fractions:
54/420 - 105/420 = 54 - 105/420 = -51/420 - After reducing the fraction, the answer is -17/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/70-15/60 9/70-30/60 27/70-15/60 9/70-45/60 45/70-15/60 9/70-75/60 63/70-15/60