Subtract 10/18 from 12/28
12/28 - 10/18 is -8/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
12/28 = 12 × 9/28 × 9 = 108/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
10/18 = 10 × 14/18 × 14 = 140/252 - Subtract the two like fractions:
108/252 - 140/252 = 108 - 140/252 = -32/252 - After reducing the fraction, the answer is -8/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28-10/18 12/28-20/18 12/56-10/18 12/28-10/36 36/28-10/18 12/28-30/18 12/84-10/18 12/28-10/54 60/28-10/18 12/28-50/18 12/28-10/90 84/28-10/18 12/28-70/18