Add 5/21 and 27/70
5/21 + 27/70 is 131/210.
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,
5/21 = 5 × 10/21 × 10 = 50/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
27/70 = 27 × 3/70 × 3 = 81/210 - Add the two like fractions:
50/210 + 81/210 = 50 + 81/210 = 131/210 - So, 5/21 + 27/70 = 131/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+27/70 5/21+54/70 5/42+27/70 15/21+27/70 5/21+81/70 5/63+27/70 25/21+27/70 35/21+27/70