Subtract 9/40 from 6/15
6/15 - 9/40 is 7/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
6/15 = 6 × 8/15 × 8 = 48/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
9/40 = 9 × 3/40 × 3 = 27/120 - Subtract the two like fractions:
48/120 - 27/120 = 48 - 27/120 = 21/120 - After reducing the fraction, the answer is 7/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/15-9/40 6/15-18/40 6/30-9/40 6/15-9/80 18/15-9/40 6/15-27/40 6/45-9/40 30/15-9/40 6/15-45/40 6/75-9/40 42/15-9/40 6/15-63/40