Add 21/42 and 8/98
21/42 + 8/98 is 57/98.
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,
8/98 = 8 × 3/98 × 3 = 24/294 - Add the two like fractions:
147/294 + 24/294 = 147 + 24/294 = 171/294 - 171/294 simplified gives 57/98
- So, 21/42 + 8/98 = 57/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/42+16/98 21/84+8/98 63/42+8/98 21/42+24/98 21/42+40/98 21/42+56/98