Add 9/20 and 21/98
9/20 + 21/98 is 93/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 98 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
9/20 = 9 × 49/20 × 49 = 441/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
21/98 = 21 × 10/98 × 10 = 210/980 - Add the two like fractions:
441/980 + 210/980 = 441 + 210/980 = 651/980 - 651/980 simplified gives 93/140
- So, 9/20 + 21/98 = 93/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20+21/98 9/20+42/98 9/40+21/98 27/20+21/98 9/20+63/98 9/60+21/98 45/20+21/98 63/20+21/98