Add 20/84 and 6/18
20/84 + 6/18 is 4/7.
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,
20/84 = 20 × 3/84 × 3 = 60/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
6/18 = 6 × 14/18 × 14 = 84/252 - Add the two like fractions:
60/252 + 84/252 = 60 + 84/252 = 144/252 - 144/252 simplified gives 4/7
- So, 20/84 + 6/18 = 4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/84+6/18 20/84+12/18 20/84+6/36 60/84+6/18 20/84+6/54 20/84+30/18 20/84+6/90 20/84+42/18