Add 6/84 and 81/70
1st number: 6/84, 2nd number: 1 11/70
6/84 + 81/70 is 43/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 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 70 × 6 = 420,
81/70 = 81 × 6/70 × 6 = 486/420 - Add the two like fractions:
30/420 + 486/420 = 30 + 486/420 = 516/420 - 516/420 simplified gives 43/35
- So, 6/84 + 81/70 = 43/35
In mixed form: 18/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/84+81/70 18/84+81/70 30/84+81/70 42/84+81/70