Add 98/35 and 7/21
1st number: 2 28/35, 2nd number: 7/21
98/35 + 7/21 is 47/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
98/35 = 98 × 3/35 × 3 = 294/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
7/21 = 7 × 5/21 × 5 = 35/105 - Add the two like fractions:
294/105 + 35/105 = 294 + 35/105 = 329/105 - 329/105 simplified gives 47/15
- So, 98/35 + 7/21 = 47/15
In mixed form: 32/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/35+14/21 98/70+7/21 98/35+7/42 98/35+7/63 98/35+35/21 98/35+49/21