Subtract 7/30 from 3/7
3/7 - 7/30 is 41/210.
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,
3/7 = 3 × 30/7 × 30 = 90/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
7/30 = 7 × 7/30 × 7 = 49/210 - Subtract the two like fractions:
90/210 - 49/210 = 90 - 49/210 = 41/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7-7/30 3/7-14/30 3/14-7/30 3/7-7/60 9/7-7/30 3/7-21/30 3/21-7/30 3/7-7/90 15/7-7/30 3/7-35/30 3/35-7/30 21/7-7/30 3/7-49/30 3/49-7/30