Subtract 12/15 from 12/16
12/16 - 12/15 is -1/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 16 × 15 = 240,
12/16 = 12 × 15/16 × 15 = 180/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
12/15 = 12 × 16/15 × 16 = 192/240 - Subtract the two like fractions:
180/240 - 192/240 = 180 - 192/240 = -12/240 - After reducing the fraction, the answer is -1/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/16-12/15 12/16-24/15 12/32-12/15 12/16-12/30 36/16-12/15 12/16-36/15 12/48-12/15 12/16-12/45 60/16-12/15 12/16-60/15 12/80-12/15 12/16-12/75 84/16-12/15 12/16-84/15