Add 42/98 and 21/10
1st number: 42/98, 2nd number: 2 1/10
42/98 + 21/10 is 177/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 10 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
42/98 = 42 × 5/98 × 5 = 210/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
21/10 = 21 × 49/10 × 49 = 1029/490 - Add the two like fractions:
210/490 + 1029/490 = 210 + 1029/490 = 1239/490 - 1239/490 simplified gives 177/70
- So, 42/98 + 21/10 = 177/70
In mixed form: 237/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/98+21/10 42/98+42/10 42/98+21/20 42/98+63/10 42/98+21/30 42/98+21/50 42/98+21/70