Subtract 1/84 from 1/30
1/30 - 1/84 is 3/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
1/30 = 1 × 14/30 × 14 = 14/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
1/84 = 1 × 5/84 × 5 = 5/420 - Subtract the two like fractions:
14/420 - 5/420 = 14 - 5/420 = 9/420 - After reducing the fraction, the answer is 3/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/30-1/84 1/30-2/84 1/60-1/84 3/30-1/84 1/30-3/84 1/90-1/84 5/30-1/84 1/30-5/84 7/30-1/84 1/30-7/84