Subtract 40/45 from 4/15
4/15 - 40/45 is -28/45.
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,
4/15 = 4 × 3/15 × 3 = 12/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
40/45 = 40 × 1/45 × 1 = 40/45 - Subtract the two like fractions:
12/45 - 40/45 = 12 - 40/45 = -28/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15-40/45 4/15-80/45 4/30-40/45 4/15-40/90 12/15-40/45 4/45-40/45 20/15-40/45 4/75-40/45 28/15-40/45