Subtract 12/81 from 28/14
1st number: 2 0/14, 2nd number: 12/81
28/14 - 12/81 is 50/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 14 × 81 = 1134,
28/14 = 28 × 81/14 × 81 = 2268/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
12/81 = 12 × 14/81 × 14 = 168/1134 - Subtract the two like fractions:
2268/1134 - 168/1134 = 2268 - 168/1134 = 2100/1134 - After reducing the fraction, the answer is 50/27
- In mixed form: 123/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14-12/81 28/14-24/81 84/14-12/81 28/14-36/81 28/42-12/81 28/14-60/81 28/70-12/81 28/14-84/81 28/98-12/81