Subtract 3/18 from 84/20
1st number: 4 4/20, 2nd number: 3/18
84/20 - 3/18 is 121/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
84/20 = 84 × 9/20 × 9 = 756/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
3/18 = 3 × 10/18 × 10 = 30/180 - Subtract the two like fractions:
756/180 - 30/180 = 756 - 30/180 = 726/180 - After reducing the fraction, the answer is 121/30
- In mixed form: 41/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-6/18 84/40-3/18 84/20-3/36 84/20-9/18 84/60-3/18 84/20-3/54 84/20-15/18 84/20-3/90 84/20-21/18