Subtract 10/18 from 12/15
12/15 - 10/18 is 11/45.
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,
12/15 = 12 × 6/15 × 6 = 72/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
10/18 = 10 × 5/18 × 5 = 50/90 - Subtract the two like fractions:
72/90 - 50/90 = 72 - 50/90 = 22/90 - After reducing the fraction, the answer is 11/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15-10/18 12/15-20/18 12/30-10/18 12/15-10/36 36/15-10/18 12/15-30/18 12/45-10/18 12/15-10/54 60/15-10/18 12/15-50/18 12/75-10/18 12/15-10/90 84/15-10/18 12/15-70/18