Subtract 12/16 from 28/54
28/54 - 12/16 is -25/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 16 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 54 × 8 = 432,
28/54 = 28 × 8/54 × 8 = 224/432 - Likewise, for the 2nd fraction, since 16 × 27 = 432,
12/16 = 12 × 27/16 × 27 = 324/432 - Subtract the two like fractions:
224/432 - 324/432 = 224 - 324/432 = -100/432 - After reducing the fraction, the answer is -25/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/54-12/16 28/54-24/16 28/54-12/32 84/54-12/16 28/54-36/16 28/54-12/48 28/54-60/16 28/54-12/80 28/54-84/16