Subtract 18/72 from 40/9
1st number: 4 4/9, 2nd number: 18/72
40/9 - 18/72 is 151/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
40/9 = 40 × 8/9 × 8 = 320/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
18/72 = 18 × 1/72 × 1 = 18/72 - Subtract the two like fractions:
320/72 - 18/72 = 320 - 18/72 = 302/72 - After reducing the fraction, the answer is 151/36
- In mixed form: 47/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9-18/72 40/9-36/72 40/18-18/72 40/9-54/72 40/27-18/72 40/9-90/72 40/45-18/72 40/63-18/72