Add 2/21 and 70/10
1st number: 2/21, 2nd number: 7 0/10
2/21 + 70/10 is 149/21.
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,
2/21 = 2 × 10/21 × 10 = 20/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
70/10 = 70 × 21/10 × 21 = 1470/210 - Add the two like fractions:
20/210 + 1470/210 = 20 + 1470/210 = 1490/210 - 1490/210 simplified gives 149/21
- So, 2/21 + 70/10 = 149/21
In mixed form: 72/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+70/10 2/42+70/10 2/21+70/20 6/21+70/10 2/63+70/10 2/21+70/30 10/21+70/10 2/21+70/50 14/21+70/10