Subtract 45/90 from 8/15
8/15 - 45/90 is 1/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
8/15 = 8 × 6/15 × 6 = 48/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
45/90 = 45 × 1/90 × 1 = 45/90 - Subtract the two like fractions:
48/90 - 45/90 = 48 - 45/90 = 3/90 - After reducing the fraction, the answer is 1/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15-45/90 8/30-45/90 24/15-45/90 8/45-45/90 40/15-45/90 8/75-45/90 56/15-45/90