Subtract 10/18 from 72/15
1st number: 4 12/15, 2nd number: 10/18
72/15 - 10/18 is 191/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
72/15 = 72 × 6/15 × 6 = 432/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
10/18 = 10 × 5/18 × 5 = 50/90 - Subtract the two like fractions:
432/90 - 50/90 = 432 - 50/90 = 382/90 - After reducing the fraction, the answer is 191/45
- In mixed form: 411/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/15-20/18 72/30-10/18 72/15-10/36 72/15-30/18 72/45-10/18 72/15-10/54 72/15-50/18 72/75-10/18 72/15-10/90 72/15-70/18