Add 6/84 and 30/20
1st number: 6/84, 2nd number: 1 10/20
6/84 + 30/20 is 11/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
6/84 = 6 × 5/84 × 5 = 30/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
30/20 = 30 × 21/20 × 21 = 630/420 - Add the two like fractions:
30/420 + 630/420 = 30 + 630/420 = 660/420 - 660/420 simplified gives 11/7
- So, 6/84 + 30/20 = 11/7
In mixed form: 14/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/84+30/20 6/84+60/20 6/84+30/40 18/84+30/20 6/84+90/20 6/84+30/60 30/84+30/20 42/84+30/20