Add 30/21 and 2/70
1st number: 1 9/21, 2nd number: 2/70
30/21 + 2/70 is 51/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
30/21 = 30 × 10/21 × 10 = 300/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
2/70 = 2 × 3/70 × 3 = 6/210 - Add the two like fractions:
300/210 + 6/210 = 300 + 6/210 = 306/210 - 306/210 simplified gives 51/35
- So, 30/21 + 2/70 = 51/35
In mixed form: 116/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+2/70 30/21+4/70 30/42+2/70 90/21+2/70 30/21+6/70 30/63+2/70 30/21+10/70 30/21+14/70