Subtract 1/15 from 12/45
12/45 - 1/15 is 1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
12/45 = 12 × 1/45 × 1 = 12/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
1/15 = 1 × 3/15 × 3 = 3/45 - Subtract the two like fractions:
12/45 - 3/45 = 12 - 3/45 = 9/45 - After reducing the fraction, the answer is 1/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/45-1/15 12/45-2/15 12/90-1/15 12/45-1/30 36/45-1/15 12/45-3/15 12/45-1/45 60/45-1/15 12/45-5/15 12/45-1/75 84/45-1/15 12/45-7/15