Add 27/21 and 2/90
1st number: 1 6/21, 2nd number: 2/90
27/21 + 2/90 is 412/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
27/21 = 27 × 30/21 × 30 = 810/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
2/90 = 2 × 7/90 × 7 = 14/630 - Add the two like fractions:
810/630 + 14/630 = 810 + 14/630 = 824/630 - 824/630 simplified gives 412/315
- So, 27/21 + 2/90 = 412/315
In mixed form: 197/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+2/90 27/21+4/90 27/42+2/90 81/21+2/90 27/21+6/90 27/63+2/90 27/21+10/90 27/21+14/90