Add 28/10 and 70/81
1st number: 2 8/10, 2nd number: 70/81
28/10 + 70/81 is 1484/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
28/10 = 28 × 81/10 × 81 = 2268/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
70/81 = 70 × 10/81 × 10 = 700/810 - Add the two like fractions:
2268/810 + 700/810 = 2268 + 700/810 = 2968/810 - 2968/810 simplified gives 1484/405
- So, 28/10 + 70/81 = 1484/405
In mixed form: 3269/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10+70/81 28/20+70/81 84/10+70/81 28/30+70/81 28/50+70/81 28/70+70/81