Add 81/70 and 6/18
1st number: 1 11/70, 2nd number: 6/18
81/70 + 6/18 is 313/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
81/70 = 81 × 9/70 × 9 = 729/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
6/18 = 6 × 35/18 × 35 = 210/630 - Add the two like fractions:
729/630 + 210/630 = 729 + 210/630 = 939/630 - 939/630 simplified gives 313/210
- So, 81/70 + 6/18 = 313/210
In mixed form: 1103/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/70+12/18 81/70+6/36 81/70+6/54 81/70+30/18 81/70+6/90 81/70+42/18