Subtract 6/80 from 9/15
9/15 - 6/80 is 21/40.
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,
9/15 = 9 × 16/15 × 16 = 144/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
6/80 = 6 × 3/80 × 3 = 18/240 - Subtract the two like fractions:
144/240 - 18/240 = 144 - 18/240 = 126/240 - After reducing the fraction, the answer is 21/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15-6/80 9/15-12/80 9/30-6/80 27/15-6/80 9/15-18/80 9/45-6/80 45/15-6/80 9/15-30/80 9/75-6/80 63/15-6/80 9/15-42/80