Add 20/21 and 18/98
20/21 + 18/98 is 167/147.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 98 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 21 × 14 = 294,
20/21 = 20 × 14/21 × 14 = 280/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
18/98 = 18 × 3/98 × 3 = 54/294 - Add the two like fractions:
280/294 + 54/294 = 280 + 54/294 = 334/294 - 334/294 simplified gives 167/147
- So, 20/21 + 18/98 = 167/147
In mixed form: 120/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21+18/98 20/21+36/98 20/42+18/98 60/21+18/98 20/21+54/98 20/63+18/98 20/21+90/98