What is the calculation of 2 over3 plus 1 over 6 plus 1 over 6 plus?

Answer 1

2/3 + 1/6 + 1/6

multiply the 2/3 by 2/2 to get a common denominator

4/6 + 1/6 + 1/6

add the numerators

(4+1+1)/6

6/6

6/6 = 1