Subtract 9/80 from 15/4
1st number: 3 3/4, 2nd number: 9/80
15/4 - 9/80 is 291/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
15/4 = 15 × 20/4 × 20 = 300/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
9/80 = 9 × 1/80 × 1 = 9/80 - Subtract the two like fractions:
300/80 - 9/80 = 300 - 9/80 = 291/80 - In mixed form: 351/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4-9/80 15/4-18/80 15/8-9/80 45/4-9/80 15/4-27/80 15/12-9/80 75/4-9/80 15/4-45/80 15/20-9/80 15/4-63/80 15/28-9/80