Subtract 9/10 from 9/70
9/70 - 9/10 is -27/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
9/70 = 9 × 1/70 × 1 = 9/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
9/10 = 9 × 7/10 × 7 = 63/70 - Subtract the two like fractions:
9/70 - 63/70 = 9 - 63/70 = -54/70 - After reducing the fraction, the answer is -27/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/70-9/10 9/70-18/10 9/70-9/20 27/70-9/10 9/70-27/10 9/70-9/30 45/70-9/10 9/70-45/10 9/70-9/50 63/70-9/10 9/70-63/10 9/70-9/70