Subtract 25/84 from 3/30
3/30 - 25/84 is -83/420.
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,
3/30 = 3 × 14/30 × 14 = 42/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
25/84 = 25 × 5/84 × 5 = 125/420 - Subtract the two like fractions:
42/420 - 125/420 = 42 - 125/420 = -83/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30-25/84 3/30-50/84 3/60-25/84 9/30-25/84 3/30-75/84 3/90-25/84 15/30-25/84 21/30-25/84