Subtract 12/45 from 40/15
1st number: 2 10/15, 2nd number: 12/45
40/15 - 12/45 is 12/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
40/15 = 40 × 3/15 × 3 = 120/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
12/45 = 12 × 1/45 × 1 = 12/45 - Subtract the two like fractions:
120/45 - 12/45 = 120 - 12/45 = 108/45 - After reducing the fraction, the answer is 12/5
- In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15-12/45 40/15-24/45 40/30-12/45 40/15-12/90 40/15-36/45 40/45-12/45 40/15-60/45 40/75-12/45 40/15-84/45