Add 70/35 and 20/81
1st number: 2 0/35, 2nd number: 20/81
70/35 + 20/81 is 182/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 81 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 35 × 81 = 2835,
70/35 = 70 × 81/35 × 81 = 5670/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
20/81 = 20 × 35/81 × 35 = 700/2835 - Add the two like fractions:
5670/2835 + 700/2835 = 5670 + 700/2835 = 6370/2835 - 6370/2835 simplified gives 182/81
- So, 70/35 + 20/81 = 182/81
In mixed form: 220/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/35+40/81 70/35+60/81