Add 18/42 and 30/24
1st number: 18/42, 2nd number: 1 6/24
18/42 + 30/24 is 47/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
18/42 = 18 × 4/42 × 4 = 72/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
30/24 = 30 × 7/24 × 7 = 210/168 - Add the two like fractions:
72/168 + 210/168 = 72 + 210/168 = 282/168 - 282/168 simplified gives 47/28
- So, 18/42 + 30/24 = 47/28
In mixed form: 119/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42+30/24 18/42+60/24 18/84+30/24 18/42+30/48 54/42+30/24 18/42+90/24 18/42+30/72 90/42+30/24