Add 12/28 and 42/54
12/28 + 42/54 is 76/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
12/28 = 12 × 27/28 × 27 = 324/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
42/54 = 42 × 14/54 × 14 = 588/756 - Add the two like fractions:
324/756 + 588/756 = 324 + 588/756 = 912/756 - 912/756 simplified gives 76/63
- So, 12/28 + 42/54 = 76/63
In mixed form: 113/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28+42/54 12/28+84/54 12/56+42/54 36/28+42/54 12/84+42/54 60/28+42/54 84/28+42/54