Add 80/84 and 14/42
80/84 + 14/42 is 9/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
80/84 = 80 × 1/84 × 1 = 80/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
14/42 = 14 × 2/42 × 2 = 28/84 - Add the two like fractions:
80/84 + 28/84 = 80 + 28/84 = 108/84 - 108/84 simplified gives 9/7
- So, 80/84 + 14/42 = 9/7
In mixed form: 12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84+28/42 80/84+14/84 80/84+70/42 80/84+98/42