Add 70/21 and 2/10
1st number: 3 7/21, 2nd number: 2/10
70/21 + 2/10 is 53/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
70/21 = 70 × 10/21 × 10 = 700/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
2/10 = 2 × 21/10 × 21 = 42/210 - Add the two like fractions:
700/210 + 42/210 = 700 + 42/210 = 742/210 - 742/210 simplified gives 53/15
- So, 70/21 + 2/10 = 53/15
In mixed form: 38/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+4/10 70/42+2/10 70/21+2/20 70/21+6/10 70/63+2/10 70/21+2/30 70/21+2/50 70/21+14/10 70/21+2/70