Add 70/10 and 80/9
1st number: 7 0/10, 2nd number: 8 8/9
70/10 + 80/9 is 143/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
70/10 = 70 × 9/10 × 9 = 630/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
80/9 = 80 × 10/9 × 10 = 800/90 - Add the two like fractions:
630/90 + 800/90 = 630 + 800/90 = 1430/90 - 1430/90 simplified gives 143/9
- So, 70/10 + 80/9 = 143/9
In mixed form: 158/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20+80/9 70/10+80/18 70/30+80/9 70/10+80/27 70/50+80/9 70/10+80/45 70/10+80/63