Add 18/9 and 20/70
1st number: 2 0/9, 2nd number: 20/70
18/9 + 20/70 is 16/7.
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,
18/9 = 18 × 70/9 × 70 = 1260/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
20/70 = 20 × 9/70 × 9 = 180/630 - Add the two like fractions:
1260/630 + 180/630 = 1260 + 180/630 = 1440/630 - 1440/630 simplified gives 16/7
- So, 18/9 + 20/70 = 16/7
In mixed form: 22/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+20/70 18/9+40/70 54/9+20/70 18/9+60/70 18/27+20/70 90/9+20/70 18/45+20/70 18/63+20/70