Subtract 6/80 from 30/15
1st number: 2 0/15, 2nd number: 6/80
30/15 - 6/80 is 77/40.
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,
30/15 = 30 × 16/15 × 16 = 480/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
6/80 = 6 × 3/80 × 3 = 18/240 - Subtract the two like fractions:
480/240 - 18/240 = 480 - 18/240 = 462/240 - After reducing the fraction, the answer is 77/40
- In mixed form: 137/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15-6/80 30/15-12/80 90/15-6/80 30/15-18/80 30/45-6/80 30/15-30/80 30/75-6/80 30/15-42/80