Subtract 15/7 from 30/25
1st number: 1 5/25, 2nd number: 2 1/7
30/25 - 15/7 is -33/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 7 is 175
Next, find the equivalent fraction of both fractional numbers with denominator 175 - For the 1st fraction, since 25 × 7 = 175,
30/25 = 30 × 7/25 × 7 = 210/175 - Likewise, for the 2nd fraction, since 7 × 25 = 175,
15/7 = 15 × 25/7 × 25 = 375/175 - Subtract the two like fractions:
210/175 - 375/175 = 210 - 375/175 = -165/175 - After reducing the fraction, the answer is -33/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/25-15/7 30/25-30/7 30/50-15/7 30/25-15/14 90/25-15/7 30/25-45/7 30/75-15/7 30/25-15/21 30/25-75/7 30/25-15/35 30/25-15/49