Add 81/9 and 70/80
1st number: 9 0/9, 2nd number: 70/80
81/9 + 70/80 is 79/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 9 × 80 = 720,
81/9 = 81 × 80/9 × 80 = 6480/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Add the two like fractions:
6480/720 + 630/720 = 6480 + 630/720 = 7110/720 - 7110/720 simplified gives 79/8
- So, 81/9 + 70/80 = 79/8
In mixed form: 97/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/18+70/80 81/27+70/80 81/45+70/80 81/63+70/80