Subtract 84/15 from 20/30
1st number: 20/30, 2nd number: 5 9/15
20/30 - 84/15 is -74/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
20/30 = 20 × 1/30 × 1 = 20/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
84/15 = 84 × 2/15 × 2 = 168/30 - Subtract the two like fractions:
20/30 - 168/30 = 20 - 168/30 = -148/30 - After reducing the fraction, the answer is -74/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30-84/15 20/60-84/15 20/30-84/30 60/30-84/15 20/90-84/15 20/30-84/45 20/30-84/75