Subtract 84/12 from 63/45
1st number: 1 18/45, 2nd number: 7 0/12
63/45 - 84/12 is -28/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
63/45 = 63 × 4/45 × 4 = 252/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
84/12 = 84 × 15/12 × 15 = 1260/180 - Subtract the two like fractions:
252/180 - 1260/180 = 252 - 1260/180 = -1008/180 - After reducing the fraction, the answer is -28/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/90-84/12 63/45-84/24 63/45-84/36 63/45-84/60