Add 18/35 and 21/98
18/35 + 21/98 is 51/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 35 × 14 = 490,
18/35 = 18 × 14/35 × 14 = 252/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
21/98 = 21 × 5/98 × 5 = 105/490 - Add the two like fractions:
252/490 + 105/490 = 252 + 105/490 = 357/490 - 357/490 simplified gives 51/70
- So, 18/35 + 21/98 = 51/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/35+21/98 18/35+42/98 18/70+21/98 54/35+21/98 18/35+63/98 90/35+21/98