Add 16/42 and 21/9
1st number: 16/42, 2nd number: 2 3/9
16/42 + 21/9 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
16/42 = 16 × 3/42 × 3 = 48/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
21/9 = 21 × 14/9 × 14 = 294/126 - Add the two like fractions:
48/126 + 294/126 = 48 + 294/126 = 342/126 - 342/126 simplified gives 19/7
- So, 16/42 + 21/9 = 19/7
In mixed form: 25/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/42+21/9 16/42+42/9 16/84+21/9 16/42+21/18 48/42+21/9 16/42+63/9 16/42+21/27 80/42+21/9 16/42+21/45 16/42+21/63