Subtract 72/9 from 15/35
1st number: 15/35, 2nd number: 8 0/9
15/35 - 72/9 is -53/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 9 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
15/35 = 15 × 9/35 × 9 = 135/315 - Likewise, for the 2nd fraction, since 9 × 35 = 315,
72/9 = 72 × 35/9 × 35 = 2520/315 - Subtract the two like fractions:
135/315 - 2520/315 = 135 - 2520/315 = -2385/315 - After reducing the fraction, the answer is -53/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/35-72/9 15/70-72/9 15/35-72/18 45/35-72/9 15/35-72/27 75/35-72/9 15/35-72/45 15/35-72/63