Add 42/12 and 18/28
1st number: 3 6/12, 2nd number: 18/28
42/12 + 18/28 is 29/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
42/12 = 42 × 7/12 × 7 = 294/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
18/28 = 18 × 3/28 × 3 = 54/84 - Add the two like fractions:
294/84 + 54/84 = 294 + 54/84 = 348/84 - 348/84 simplified gives 29/7
- So, 42/12 + 18/28 = 29/7
In mixed form: 41/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+18/28 42/12+36/28 42/24+18/28 42/12+18/56 42/12+54/28 42/36+18/28 42/12+18/84 42/12+90/28 42/60+18/28 42/84+18/28