Add 21/98 and 20/8
1st number: 21/98, 2nd number: 2 4/8
21/98 + 20/8 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 8 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 98 × 4 = 392,
21/98 = 21 × 4/98 × 4 = 84/392 - Likewise, for the 2nd fraction, since 8 × 49 = 392,
20/8 = 20 × 49/8 × 49 = 980/392 - Add the two like fractions:
84/392 + 980/392 = 84 + 980/392 = 1064/392 - 1064/392 simplified gives 19/7
- So, 21/98 + 20/8 = 19/7
In mixed form: 25/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98+20/8 21/98+40/8 21/98+20/16 63/98+20/8 21/98+60/8 21/98+20/24 21/98+20/40 21/98+20/56