Add 84/10 and 70/9
1st number: 8 4/10, 2nd number: 7 7/9
84/10 + 70/9 is 728/45.
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,
84/10 = 84 × 9/10 × 9 = 756/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
70/9 = 70 × 10/9 × 10 = 700/90 - Add the two like fractions:
756/90 + 700/90 = 756 + 700/90 = 1456/90 - 1456/90 simplified gives 728/45
- So, 84/10 + 70/9 = 728/45
In mixed form: 168/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+70/9 84/10+70/18 84/30+70/9 84/10+70/27 84/50+70/9 84/10+70/45 84/70+70/9 84/10+70/63