Add 5/30 and 21/7
1st number: 5/30, 2nd number: 3 0/7
5/30 + 21/7 is 19/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
5/30 = 5 × 7/30 × 7 = 35/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
21/7 = 21 × 30/7 × 30 = 630/210 - Add the two like fractions:
35/210 + 630/210 = 35 + 630/210 = 665/210 - 665/210 simplified gives 19/6
- So, 5/30 + 21/7 = 19/6
In mixed form: 31/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/30+21/7 5/30+42/7 5/60+21/7 5/30+21/14 15/30+21/7 5/30+63/7 5/90+21/7 25/30+21/7 5/30+21/35 35/30+21/7 5/30+21/49