Add 98/12 and 24/21
1st number: 8 2/12, 2nd number: 1 3/21
98/12 + 24/21 is 391/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
98/12 = 98 × 7/12 × 7 = 686/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
24/21 = 24 × 4/21 × 4 = 96/84 - Add the two like fractions:
686/84 + 96/84 = 686 + 96/84 = 782/84 - 782/84 simplified gives 391/42
- So, 98/12 + 24/21 = 391/42
In mixed form: 913/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/12+48/21 98/24+24/21 98/12+24/42 98/12+72/21 98/36+24/21 98/12+24/63 98/60+24/21 98/84+24/21