Add 84/9 and 15/70
1st number: 9 3/9, 2nd number: 15/70
84/9 + 15/70 is 401/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
84/9 = 84 × 70/9 × 70 = 5880/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
15/70 = 15 × 9/70 × 9 = 135/630 - Add the two like fractions:
5880/630 + 135/630 = 5880 + 135/630 = 6015/630 - 6015/630 simplified gives 401/42
- So, 84/9 + 15/70 = 401/42
In mixed form: 923/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9+30/70 84/18+15/70 84/9+45/70 84/27+15/70 84/9+75/70 84/45+15/70 84/63+15/70