Add 8/84 and 42/18
1st number: 8/84, 2nd number: 2 6/18
8/84 + 42/18 is 17/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
8/84 = 8 × 3/84 × 3 = 24/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
42/18 = 42 × 14/18 × 14 = 588/252 - Add the two like fractions:
24/252 + 588/252 = 24 + 588/252 = 612/252 - 612/252 simplified gives 17/7
- So, 8/84 + 42/18 = 17/7
In mixed form: 23/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/84+42/18 8/84+84/18 8/84+42/36 24/84+42/18 8/84+42/54 40/84+42/18 8/84+42/90 56/84+42/18