Subtract 9/72 from 30/10
1st number: 3 0/10, 2nd number: 9/72
30/10 - 9/72 is 23/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 10 × 36 = 360,
30/10 = 30 × 36/10 × 36 = 1080/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Subtract the two like fractions:
1080/360 - 45/360 = 1080 - 45/360 = 1035/360 - After reducing the fraction, the answer is 23/8
- In mixed form: 27/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/10-9/72 30/10-18/72 30/20-9/72 90/10-9/72 30/10-27/72 30/10-45/72 30/50-9/72 30/10-63/72 30/70-9/72