Subtract 3/84 from 20/25
20/25 - 3/84 is 107/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 25 × 84 = 2100,
20/25 = 20 × 84/25 × 84 = 1680/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
3/84 = 3 × 25/84 × 25 = 75/2100 - Subtract the two like fractions:
1680/2100 - 75/2100 = 1680 - 75/2100 = 1605/2100 - After reducing the fraction, the answer is 107/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/25-3/84 20/25-6/84 20/50-3/84 60/25-3/84 20/25-9/84 20/75-3/84 20/25-15/84 20/25-21/84