Add 9/21 and 98/12
1st number: 9/21, 2nd number: 8 2/12
9/21 + 98/12 is 361/42.
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,
9/21 = 9 × 4/21 × 4 = 36/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
98/12 = 98 × 7/12 × 7 = 686/84 - Add the two like fractions:
36/84 + 686/84 = 36 + 686/84 = 722/84 - 722/84 simplified gives 361/42
- So, 9/21 + 98/12 = 361/42
In mixed form: 825/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21+98/12 9/42+98/12 9/21+98/24 27/21+98/12 9/63+98/12 9/21+98/36 45/21+98/12 9/21+98/60 63/21+98/12 9/21+98/84