Add 27/21 and 35/90
1st number: 1 6/21, 2nd number: 35/90
27/21 + 35/90 is 211/126.
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,
35/90 = 35 × 7/90 × 7 = 245/630 - Add the two like fractions:
810/630 + 245/630 = 810 + 245/630 = 1055/630 - 1055/630 simplified gives 211/126
- So, 27/21 + 35/90 = 211/126
In mixed form: 185/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+35/90 27/21+70/90 27/42+35/90 81/21+35/90 27/63+35/90