Add 20/98 and 21/30
20/98 + 21/30 is 443/490.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 98 × 15 = 1470,
20/98 = 20 × 15/98 × 15 = 300/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
21/30 = 21 × 49/30 × 49 = 1029/1470 - Add the two like fractions:
300/1470 + 1029/1470 = 300 + 1029/1470 = 1329/1470 - 1329/1470 simplified gives 443/490
- So, 20/98 + 21/30 = 443/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/98+21/30 20/98+42/30 20/98+21/60 60/98+21/30 20/98+63/30 20/98+21/90