Subtract 80/84 from 15/25
15/25 - 80/84 is -37/105.
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,
15/25 = 15 × 84/25 × 84 = 1260/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
80/84 = 80 × 25/84 × 25 = 2000/2100 - Subtract the two like fractions:
1260/2100 - 2000/2100 = 1260 - 2000/2100 = -740/2100 - After reducing the fraction, the answer is -37/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/25-80/84 15/50-80/84 45/25-80/84 15/75-80/84 75/25-80/84