Add 84/35 and 30/21
1st number: 2 14/35, 2nd number: 1 9/21
84/35 + 30/21 is 134/35.
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,
84/35 = 84 × 3/35 × 3 = 252/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
30/21 = 30 × 5/21 × 5 = 150/105 - Add the two like fractions:
252/105 + 150/105 = 252 + 150/105 = 402/105 - 402/105 simplified gives 134/35
- So, 84/35 + 30/21 = 134/35
In mixed form: 329/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/35+60/21 84/70+30/21 84/35+30/42 84/35+90/21 84/35+30/63