Add 98/21 and 12/30
1st number: 4 14/21, 2nd number: 12/30
98/21 + 12/30 is 76/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
98/21 = 98 × 10/21 × 10 = 980/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
12/30 = 12 × 7/30 × 7 = 84/210 - Add the two like fractions:
980/210 + 84/210 = 980 + 84/210 = 1064/210 - 1064/210 simplified gives 76/15
- So, 98/21 + 12/30 = 76/15
In mixed form: 51/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21+24/30 98/42+12/30 98/21+12/60 98/21+36/30 98/63+12/30 98/21+12/90 98/21+60/30 98/21+84/30