Add 20/49 and 49/90
20/49 + 49/90 is 4201/4410.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 90 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 49 × 90 = 4410,
20/49 = 20 × 90/49 × 90 = 1800/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
49/90 = 49 × 49/90 × 49 = 2401/4410 - Add the two like fractions:
1800/4410 + 2401/4410 = 1800 + 2401/4410 = 4201/4410 - So, 20/49 + 49/90 = 4201/4410
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/49+49/90 20/49+98/90 20/98+49/90 60/49+49/90