Add 84/70 and 3/9
1st number: 1 14/70, 2nd number: 3/9
84/70 + 3/9 is 23/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
84/70 = 84 × 9/70 × 9 = 756/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
3/9 = 3 × 70/9 × 70 = 210/630 - Add the two like fractions:
756/630 + 210/630 = 756 + 210/630 = 966/630 - 966/630 simplified gives 23/15
- So, 84/70 + 3/9 = 23/15
In mixed form: 18/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70+6/9 84/70+3/18 84/70+3/27 84/70+15/9 84/70+3/45 84/70+21/9 84/70+3/63