Subtract 40/72 from 45/3
1st number: 15 0/3, 2nd number: 40/72
45/3 - 40/72 is 130/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 3 × 24 = 72,
45/3 = 45 × 24/3 × 24 = 1080/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
40/72 = 40 × 1/72 × 1 = 40/72 - Subtract the two like fractions:
1080/72 - 40/72 = 1080 - 40/72 = 1040/72 - After reducing the fraction, the answer is 130/9
- In mixed form: 144/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3-40/72 45/3-80/72 45/6-40/72 45/9-40/72 45/15-40/72 45/21-40/72