Subtract 3/80 from 18/15
1st number: 1 3/15, 2nd number: 3/80
18/15 - 3/80 is 93/80.
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,
18/15 = 18 × 16/15 × 16 = 288/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
3/80 = 3 × 3/80 × 3 = 9/240 - Subtract the two like fractions:
288/240 - 9/240 = 288 - 9/240 = 279/240 - After reducing the fraction, the answer is 93/80
- In mixed form: 113/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15-3/80 18/15-6/80 18/30-3/80 54/15-3/80 18/15-9/80 18/45-3/80 90/15-3/80 18/15-15/80 18/75-3/80 18/15-21/80