Subtract 2/7 from 8/30
8/30 - 2/7 is -2/105.
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,
8/30 = 8 × 7/30 × 7 = 56/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
2/7 = 2 × 30/7 × 30 = 60/210 - Subtract the two like fractions:
56/210 - 60/210 = 56 - 60/210 = -4/210 - After reducing the fraction, the answer is -2/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/30-2/7 8/30-4/7 8/60-2/7 8/30-2/14 24/30-2/7 8/30-6/7 8/90-2/7 8/30-2/21 40/30-2/7 8/30-10/7 8/30-2/35 56/30-2/7 8/30-14/7 8/30-2/49