Subtract 9/30 from 1/7
1/7 - 9/30 is -11/70.
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,
1/7 = 1 × 30/7 × 30 = 30/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
9/30 = 9 × 7/30 × 7 = 63/210 - Subtract the two like fractions:
30/210 - 63/210 = 30 - 63/210 = -33/210 - After reducing the fraction, the answer is -11/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/7-9/30 1/7-18/30 1/14-9/30 1/7-9/60 3/7-9/30 1/7-27/30 1/21-9/30 1/7-9/90 5/7-9/30 1/7-45/30 1/35-9/30 1/7-63/30 1/49-9/30