Add 70/98 and 42/18
1st number: 70/98, 2nd number: 2 6/18
70/98 + 42/18 is 64/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 18 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 98 × 9 = 882,
70/98 = 70 × 9/98 × 9 = 630/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
42/18 = 42 × 49/18 × 49 = 2058/882 - Add the two like fractions:
630/882 + 2058/882 = 630 + 2058/882 = 2688/882 - 2688/882 simplified gives 64/21
- So, 70/98 + 42/18 = 64/21
In mixed form: 31/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/98+84/18 70/98+42/36 70/98+42/54 70/98+42/90