Add 7/30 and 98/21
1st number: 7/30, 2nd number: 4 14/21
7/30 + 98/21 is 49/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
7/30 = 7 × 7/30 × 7 = 49/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
98/21 = 98 × 10/21 × 10 = 980/210 - Add the two like fractions:
49/210 + 980/210 = 49 + 980/210 = 1029/210 - 1029/210 simplified gives 49/10
- So, 7/30 + 98/21 = 49/10
In mixed form: 49/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+98/21 7/60+98/21 7/30+98/42 21/30+98/21 7/90+98/21 7/30+98/63 35/30+98/21 49/30+98/21