Add 5/2 and 70/81
1st number: 2 1/2, 2nd number: 70/81
5/2 + 70/81 is 545/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 2 × 81 = 162,
5/2 = 5 × 81/2 × 81 = 405/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
70/81 = 70 × 2/81 × 2 = 140/162 - Add the two like fractions:
405/162 + 140/162 = 405 + 140/162 = 545/162 - So, 5/2 + 70/81 = 545/162
In mixed form: 359/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/2+70/81 5/4+70/81 15/2+70/81 5/6+70/81 25/2+70/81 5/10+70/81 35/2+70/81 5/14+70/81