Subtract 45/15 from 45/36
1st number: 1 9/36, 2nd number: 3 0/15
45/36 - 45/15 is -7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 15 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
45/36 = 45 × 5/36 × 5 = 225/180 - Likewise, for the 2nd fraction, since 15 × 12 = 180,
45/15 = 45 × 12/15 × 12 = 540/180 - Subtract the two like fractions:
225/180 - 540/180 = 225 - 540/180 = -315/180 - After reducing the fraction, the answer is -7/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36-45/15 45/36-90/15 45/72-45/15 45/36-45/30 45/36-45/75