Subtract 1/45 from 40/12
1st number: 3 4/12, 2nd number: 1/45
40/12 - 1/45 is 149/45.
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,
40/12 = 40 × 15/12 × 15 = 600/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
1/45 = 1 × 4/45 × 4 = 4/180 - Subtract the two like fractions:
600/180 - 4/180 = 600 - 4/180 = 596/180 - After reducing the fraction, the answer is 149/45
- In mixed form: 314/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12-1/45 40/12-2/45 40/24-1/45 40/12-1/90 40/12-3/45 40/36-1/45 40/12-5/45 40/60-1/45 40/12-7/45 40/84-1/45