Add 2/7 and 84/18
1st number: 2/7, 2nd number: 4 12/18
2/7 + 84/18 is 104/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
2/7 = 2 × 18/7 × 18 = 36/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
84/18 = 84 × 7/18 × 7 = 588/126 - Add the two like fractions:
36/126 + 588/126 = 36 + 588/126 = 624/126 - 624/126 simplified gives 104/21
- So, 2/7 + 84/18 = 104/21
In mixed form: 420/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/7+84/18 2/14+84/18 2/7+84/36 6/7+84/18 2/21+84/18 2/7+84/54 10/7+84/18 2/35+84/18 2/7+84/90 14/7+84/18 2/49+84/18