Add 30/70 and 21/6
1st number: 30/70, 2nd number: 3 3/6
30/70 + 21/6 is 55/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
30/70 = 30 × 3/70 × 3 = 90/210 - Likewise, for the 2nd fraction, since 6 × 35 = 210,
21/6 = 21 × 35/6 × 35 = 735/210 - Add the two like fractions:
90/210 + 735/210 = 90 + 735/210 = 825/210 - 825/210 simplified gives 55/14
- So, 30/70 + 21/6 = 55/14
In mixed form: 313/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+21/6 30/70+42/6 30/70+21/12 90/70+21/6 30/70+63/6 30/70+21/18 30/70+21/30 30/70+21/42