Add 27/21 and 9/10
1st number: 1 6/21, 2nd number: 9/10
27/21 + 9/10 is 153/70.
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,
27/21 = 27 × 10/21 × 10 = 270/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
9/10 = 9 × 21/10 × 21 = 189/210 - Add the two like fractions:
270/210 + 189/210 = 270 + 189/210 = 459/210 - 459/210 simplified gives 153/70
- So, 27/21 + 9/10 = 153/70
In mixed form: 213/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+9/10 27/21+18/10 27/42+9/10 27/21+9/20 81/21+9/10 27/21+27/10 27/63+9/10 27/21+9/30 27/21+45/10 27/21+9/50 27/21+63/10 27/21+9/70