Subtract 84/45 from 4/12
1st number: 4/12, 2nd number: 1 39/45
4/12 - 84/45 is -23/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
4/12 = 4 × 15/12 × 15 = 60/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
84/45 = 84 × 4/45 × 4 = 336/180 - Subtract the two like fractions:
60/180 - 336/180 = 60 - 336/180 = -276/180 - After reducing the fraction, the answer is -23/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12-84/45 4/24-84/45 4/12-84/90 4/36-84/45 20/12-84/45 4/60-84/45 28/12-84/45 4/84-84/45