Subtract 9/80 from 45/15
1st number: 3 0/15, 2nd number: 9/80
45/15 - 9/80 is 231/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
45/15 = 45 × 16/15 × 16 = 720/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
9/80 = 9 × 3/80 × 3 = 27/240 - Subtract the two like fractions:
720/240 - 27/240 = 720 - 27/240 = 693/240 - After reducing the fraction, the answer is 231/80
- In mixed form: 271/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15-9/80 45/15-18/80 45/30-9/80 45/15-27/80 45/15-45/80 45/75-9/80 45/15-63/80