Add 98/21 and 80/12
1st number: 4 14/21, 2nd number: 6 8/12
98/21 + 80/12 is 34/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
98/21 = 98 × 4/21 × 4 = 392/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
80/12 = 80 × 7/12 × 7 = 560/84 - Add the two like fractions:
392/84 + 560/84 = 392 + 560/84 = 952/84 - 952/84 simplified gives 34/3
- So, 98/21 + 80/12 = 34/3
In mixed form: 111/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/42+80/12 98/21+80/24 98/63+80/12 98/21+80/36 98/21+80/60 98/21+80/84