Add 21/42 and 35/98
21/42 + 35/98 is 6/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 98 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
21/42 = 21 × 7/42 × 7 = 147/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
35/98 = 35 × 3/98 × 3 = 105/294 - Add the two like fractions:
147/294 + 105/294 = 147 + 105/294 = 252/294 - 252/294 simplified gives 6/7
- So, 21/42 + 35/98 = 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/42+70/98 21/84+35/98 63/42+35/98