Add 8/42 and 15/3
1st number: 8/42, 2nd number: 5 0/3
8/42 + 15/3 is 109/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 3 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
8/42 = 8 × 1/42 × 1 = 8/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
15/3 = 15 × 14/3 × 14 = 210/42 - Add the two like fractions:
8/42 + 210/42 = 8 + 210/42 = 218/42 - 218/42 simplified gives 109/21
- So, 8/42 + 15/3 = 109/21
In mixed form: 54/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/42+15/3 8/42+30/3 8/84+15/3 8/42+15/6 24/42+15/3 8/42+45/3 8/42+15/9 40/42+15/3 8/42+75/3 56/42+15/3 8/42+15/21