Add 3/84 and 20/7
1st number: 3/84, 2nd number: 2 6/7
3/84 + 20/7 is 81/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
3/84 = 3 × 1/84 × 1 = 3/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
20/7 = 20 × 12/7 × 12 = 240/84 - Add the two like fractions:
3/84 + 240/84 = 3 + 240/84 = 243/84 - 243/84 simplified gives 81/28
- So, 3/84 + 20/7 = 81/28
In mixed form: 225/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/84+20/7 3/84+40/7 3/84+20/14 9/84+20/7 3/84+60/7 3/84+20/21 15/84+20/7 3/84+20/35 21/84+20/7 3/84+20/49