Add 14/21 and 14/90
14/21 + 14/90 is 37/45.
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,
14/90 = 14 × 7/90 × 7 = 98/630 - Add the two like fractions:
420/630 + 98/630 = 420 + 98/630 = 518/630 - 518/630 simplified gives 37/45
- So, 14/21 + 14/90 = 37/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21+14/90 14/21+28/90 14/42+14/90 42/21+14/90 14/21+42/90 14/63+14/90 70/21+14/90 14/21+70/90 98/21+14/90 14/21+98/90