Add 7/30 and 56/21
1st number: 7/30, 2nd number: 2 14/21
7/30 + 56/21 is 29/10.
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,
56/21 = 56 × 10/21 × 10 = 560/210 - Add the two like fractions:
49/210 + 560/210 = 49 + 560/210 = 609/210 - 609/210 simplified gives 29/10
- So, 7/30 + 56/21 = 29/10
In mixed form: 29/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+56/21 7/60+56/21 7/30+56/42 21/30+56/21 7/90+56/21 7/30+56/63 35/30+56/21 49/30+56/21