Add 18/28 and 30/9
1st number: 18/28, 2nd number: 3 3/9
18/28 + 30/9 is 167/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
18/28 = 18 × 9/28 × 9 = 162/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
30/9 = 30 × 28/9 × 28 = 840/252 - Add the two like fractions:
162/252 + 840/252 = 162 + 840/252 = 1002/252 - 1002/252 simplified gives 167/42
- So, 18/28 + 30/9 = 167/42
In mixed form: 341/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28+30/9 18/28+60/9 18/56+30/9 18/28+30/18 54/28+30/9 18/28+90/9 18/84+30/9 18/28+30/27 90/28+30/9 18/28+30/45 18/28+30/63