Subtract 7/30 from 15/7
1st number: 2 1/7, 2nd number: 7/30
15/7 - 7/30 is 401/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
15/7 = 15 × 30/7 × 30 = 450/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
7/30 = 7 × 7/30 × 7 = 49/210 - Subtract the two like fractions:
450/210 - 49/210 = 450 - 49/210 = 401/210 - In mixed form: 1191/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7-7/30 15/7-14/30 15/14-7/30 15/7-7/60 45/7-7/30 15/7-21/30 15/21-7/30 15/7-7/90 75/7-7/30 15/7-35/30 15/35-7/30 15/7-49/30 15/49-7/30