Add 80/84 and 27/70
80/84 + 27/70 is 281/210.
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,
80/84 = 80 × 5/84 × 5 = 400/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
27/70 = 27 × 6/70 × 6 = 162/420 - Add the two like fractions:
400/420 + 162/420 = 400 + 162/420 = 562/420 - 562/420 simplified gives 281/210
- So, 80/84 + 27/70 = 281/210
In mixed form: 171/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84+54/70 80/84+81/70