Subtract 84/45 from 9/12
1st number: 9/12, 2nd number: 1 39/45
9/12 - 84/45 is -67/60.
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,
9/12 = 9 × 15/12 × 15 = 135/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
84/45 = 84 × 4/45 × 4 = 336/180 - Subtract the two like fractions:
135/180 - 336/180 = 135 - 336/180 = -201/180 - After reducing the fraction, the answer is -67/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12-84/45 9/24-84/45 9/12-84/90 27/12-84/45 9/36-84/45 45/12-84/45 9/60-84/45 63/12-84/45 9/84-84/45