Subtract 30/72 from 30/9
1st number: 3 3/9, 2nd number: 30/72
30/9 - 30/72 is 35/12.
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,
30/9 = 30 × 8/9 × 8 = 240/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
30/72 = 30 × 1/72 × 1 = 30/72 - Subtract the two like fractions:
240/72 - 30/72 = 240 - 30/72 = 210/72 - After reducing the fraction, the answer is 35/12
- In mixed form: 211/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9-30/72 30/9-60/72 30/18-30/72 90/9-30/72 30/9-90/72 30/27-30/72 30/45-30/72 30/63-30/72