Add 28/42 and 12/18
28/42 + 12/18 is 4/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
28/42 = 28 × 3/42 × 3 = 84/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
12/18 = 12 × 7/18 × 7 = 84/126 - Add the two like fractions:
84/126 + 84/126 = 84 + 84/126 = 168/126 - 168/126 simplified gives 4/3
- So, 28/42 + 12/18 = 4/3
In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+12/18 28/42+24/18 28/84+12/18 28/42+12/36 84/42+12/18 28/42+36/18 28/42+12/54 28/42+60/18 28/42+12/90 28/42+84/18