Subtract 84/20 from 3/9
1st number: 3/9, 2nd number: 4 4/20
3/9 - 84/20 is -58/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
3/9 = 3 × 20/9 × 20 = 60/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
84/20 = 84 × 9/20 × 9 = 756/180 - Subtract the two like fractions:
60/180 - 756/180 = 60 - 756/180 = -696/180 - After reducing the fraction, the answer is -58/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9-84/20 3/18-84/20 3/9-84/40 3/27-84/20 3/9-84/60 15/9-84/20 3/45-84/20 21/9-84/20 3/63-84/20