Subtract 15/16 from 12/18
12/18 - 15/16 is -13/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
12/18 = 12 × 8/18 × 8 = 96/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
15/16 = 15 × 9/16 × 9 = 135/144 - Subtract the two like fractions:
96/144 - 135/144 = 96 - 135/144 = -39/144 - After reducing the fraction, the answer is -13/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-15/16 12/18-30/16 12/36-15/16 12/18-15/32 36/18-15/16 12/18-45/16 12/54-15/16 12/18-15/48 60/18-15/16 12/18-75/16 12/90-15/16 12/18-15/80 84/18-15/16