Subtract 2/7 from 10/30
10/30 - 2/7 is 1/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
10/30 = 10 × 7/30 × 7 = 70/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
2/7 = 2 × 30/7 × 30 = 60/210 - Subtract the two like fractions:
70/210 - 60/210 = 70 - 60/210 = 10/210 - After reducing the fraction, the answer is 1/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/30-2/7 10/30-4/7 10/60-2/7 10/30-2/14 10/30-6/7 10/90-2/7 10/30-2/21 50/30-2/7 10/30-10/7 10/30-2/35 70/30-2/7 10/30-14/7 10/30-2/49