Add 81/70 and 5/9
1st number: 1 11/70, 2nd number: 5/9
81/70 + 5/9 is 1079/630.
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,
81/70 = 81 × 9/70 × 9 = 729/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
5/9 = 5 × 70/9 × 70 = 350/630 - Add the two like fractions:
729/630 + 350/630 = 729 + 350/630 = 1079/630 - So, 81/70 + 5/9 = 1079/630
In mixed form: 1449/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/70+10/9 81/70+5/18 81/70+15/9 81/70+5/27 81/70+25/9 81/70+5/45 81/70+35/9 81/70+5/63