Subtract 3/30 from 30/84
30/84 - 3/30 is 9/35.
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,
30/84 = 30 × 5/84 × 5 = 150/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
3/30 = 3 × 14/30 × 14 = 42/420 - Subtract the two like fractions:
150/420 - 42/420 = 150 - 42/420 = 108/420 - After reducing the fraction, the answer is 9/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84-3/30 30/84-6/30 30/84-3/60 90/84-3/30 30/84-9/30 30/84-3/90 30/84-15/30 30/84-21/30