Add 18/9 and 15/70
1st number: 2 0/9, 2nd number: 15/70
18/9 + 15/70 is 31/14.
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,
15/70 = 15 × 9/70 × 9 = 135/630 - Add the two like fractions:
1260/630 + 135/630 = 1260 + 135/630 = 1395/630 - 1395/630 simplified gives 31/14
- So, 18/9 + 15/70 = 31/14
In mixed form: 23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+15/70 18/9+30/70 54/9+15/70 18/9+45/70 18/27+15/70 90/9+15/70 18/9+75/70 18/45+15/70 18/63+15/70