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