Add 28/98 and 21/70
28/98 + 21/70 is 41/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
28/98 = 28 × 5/98 × 5 = 140/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
21/70 = 21 × 7/70 × 7 = 147/490 - Add the two like fractions:
140/490 + 147/490 = 140 + 147/490 = 287/490 - 287/490 simplified gives 41/70
- So, 28/98 + 21/70 = 41/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/98+21/70 28/98+42/70 84/98+21/70 28/98+63/70