Subtract 54/45 from 8/12
1st number: 8/12, 2nd number: 1 9/45
8/12 - 54/45 is -8/15.
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,
8/12 = 8 × 15/12 × 15 = 120/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
54/45 = 54 × 4/45 × 4 = 216/180 - Subtract the two like fractions:
120/180 - 216/180 = 120 - 216/180 = -96/180 - After reducing the fraction, the answer is -8/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12-54/45 8/24-54/45 8/12-54/90 24/12-54/45 8/36-54/45 40/12-54/45 8/60-54/45 56/12-54/45 8/84-54/45