Subtract 27/10 from 15/70
1st number: 15/70, 2nd number: 2 7/10
15/70 - 27/10 is -87/35.
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,
15/70 = 15 × 1/70 × 1 = 15/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
27/10 = 27 × 7/10 × 7 = 189/70 - Subtract the two like fractions:
15/70 - 189/70 = 15 - 189/70 = -174/70 - After reducing the fraction, the answer is -87/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70-27/10 15/70-54/10 15/70-27/20 45/70-27/10 15/70-81/10 15/70-27/30 75/70-27/10 15/70-27/50 15/70-27/70