Add 14/21 and 35/90
14/21 + 35/90 is 19/18.
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,
14/21 = 14 × 30/21 × 30 = 420/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
35/90 = 35 × 7/90 × 7 = 245/630 - Add the two like fractions:
420/630 + 245/630 = 420 + 245/630 = 665/630 - 665/630 simplified gives 19/18
- So, 14/21 + 35/90 = 19/18
In mixed form: 11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21+35/90 14/21+70/90 14/42+35/90 42/21+35/90 14/63+35/90 70/21+35/90 98/21+35/90