Subtract 75/45 from 8/12
1st number: 8/12, 2nd number: 1 30/45
8/12 - 75/45 is -1/1.
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,
75/45 = 75 × 4/45 × 4 = 300/180 - Subtract the two like fractions:
120/180 - 300/180 = 120 - 300/180 = -180/180 - After reducing the fraction, the answer is -1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12-75/45 8/24-75/45 8/12-75/90 24/12-75/45 8/36-75/45 40/12-75/45 8/60-75/45 56/12-75/45 8/84-75/45