Add 12/14 and 18/54
12/14 + 18/54 is 25/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 14 × 27 = 378,
12/14 = 12 × 27/14 × 27 = 324/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
18/54 = 18 × 7/54 × 7 = 126/378 - Add the two like fractions:
324/378 + 126/378 = 324 + 126/378 = 450/378 - 450/378 simplified gives 25/21
- So, 12/14 + 18/54 = 25/21
In mixed form: 14/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/14+18/54 12/14+36/54 12/28+18/54 36/14+18/54 12/42+18/54 60/14+18/54 12/14+90/54 12/70+18/54 84/14+18/54 12/98+18/54