Add 80/70 and 84/9
1st number: 1 10/70, 2nd number: 9 3/9
80/70 + 84/9 is 220/21.
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,
80/70 = 80 × 9/70 × 9 = 720/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
84/9 = 84 × 70/9 × 70 = 5880/630 - Add the two like fractions:
720/630 + 5880/630 = 720 + 5880/630 = 6600/630 - 6600/630 simplified gives 220/21
- So, 80/70 + 84/9 = 220/21
In mixed form: 1010/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70+84/18 80/70+84/27 80/70+84/45 80/70+84/63