Subtract 3/30 from 1/84
1/84 - 3/30 is -37/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
1/84 = 1 × 5/84 × 5 = 5/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
3/30 = 3 × 14/30 × 14 = 42/420 - Subtract the two like fractions:
5/420 - 42/420 = 5 - 42/420 = -37/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/84-3/30 1/84-6/30 1/84-3/60 3/84-3/30 1/84-9/30 1/84-3/90 5/84-3/30 1/84-15/30 7/84-3/30 1/84-21/30