Subtract 1/7 from 4/30
4/30 - 1/7 is -1/105.
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,
4/30 = 4 × 7/30 × 7 = 28/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
1/7 = 1 × 30/7 × 30 = 30/210 - Subtract the two like fractions:
28/210 - 30/210 = 28 - 30/210 = -2/210 - After reducing the fraction, the answer is -1/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30-1/7 4/30-2/7 4/60-1/7 4/30-1/14 12/30-1/7 4/30-3/7 4/90-1/7 4/30-1/21 20/30-1/7 4/30-5/7 4/30-1/35 28/30-1/7 4/30-1/49