Add 21/90 and 14/49
21/90 + 14/49 is 109/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 49 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
21/90 = 21 × 49/90 × 49 = 1029/4410 - Likewise, for the 2nd fraction, since 49 × 90 = 4410,
14/49 = 14 × 90/49 × 90 = 1260/4410 - Add the two like fractions:
1029/4410 + 1260/4410 = 1029 + 1260/4410 = 2289/4410 - 2289/4410 simplified gives 109/210
- So, 21/90 + 14/49 = 109/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/90+14/49 21/90+28/49 21/90+14/98 63/90+14/49 21/90+42/49 21/90+70/49 21/90+98/49