Question

a spaceship traveled 10/11 of a light - year from earth to planet x and 5/11 of a light - year from planet x to planet y. then it traveled 6/11 of a light - year from planet y back to earth. how many light - years did the spaceship travel in all? light - years

Explanation:

Step1: Add the distances

We need to add $\frac{10}{11}+\frac{5}{11}+\frac{6}{11}$.

Step2: Calculate the sum

Since the denominators are the same, we add the numerators: $\frac{10 + 5+6}{11}=\frac{21}{11}$.

Answer:

$\frac{21}{11}$