Add 84/42 and 7/9
1st number: 2 0/42, 2nd number: 7/9
84/42 + 7/9 is 25/9.
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,
84/42 = 84 × 3/42 × 3 = 252/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
7/9 = 7 × 14/9 × 14 = 98/126 - Add the two like fractions:
252/126 + 98/126 = 252 + 98/126 = 350/126 - 350/126 simplified gives 25/9
- So, 84/42 + 7/9 = 25/9
In mixed form: 27/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/42+14/9 84/42+7/18 84/42+21/9 84/42+7/27 84/42+35/9 84/42+7/45 84/42+49/9 84/42+7/63