Subtract 7/18 from 45/15
1st number: 3 0/15, 2nd number: 7/18
45/15 - 7/18 is 47/18.
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,
45/15 = 45 × 6/15 × 6 = 270/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
7/18 = 7 × 5/18 × 5 = 35/90 - Subtract the two like fractions:
270/90 - 35/90 = 270 - 35/90 = 235/90 - After reducing the fraction, the answer is 47/18
- In mixed form: 211/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15-7/18 45/15-14/18 45/30-7/18 45/15-7/36 45/15-21/18 45/15-7/54 45/15-35/18 45/75-7/18 45/15-7/90 45/15-49/18