Add 21/10 and 12/98
1st number: 2 1/10, 2nd number: 12/98
21/10 + 12/98 is 1089/490.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 10 × 49 = 490,
21/10 = 21 × 49/10 × 49 = 1029/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
12/98 = 12 × 5/98 × 5 = 60/490 - Add the two like fractions:
1029/490 + 60/490 = 1029 + 60/490 = 1089/490 - So, 21/10 + 12/98 = 1089/490
In mixed form: 2109/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10+12/98 21/10+24/98 21/20+12/98 63/10+12/98 21/10+36/98 21/30+12/98 21/10+60/98 21/50+12/98 21/10+84/98 21/70+12/98