Add 20/21 and 20/98
20/21 + 20/98 is 170/147.
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,
20/98 = 20 × 3/98 × 3 = 60/294 - Add the two like fractions:
280/294 + 60/294 = 280 + 60/294 = 340/294 - 340/294 simplified gives 170/147
- So, 20/21 + 20/98 = 170/147
In mixed form: 123/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21+20/98 20/21+40/98 20/42+20/98 60/21+20/98 20/21+60/98 20/63+20/98