Question

Can somone please help me with these

Answer 1

Problem 1 C.4

Explanation:

x+(x+2)+(x+2-1)=12

3x+3=12

x+1=4

x=3

Luna = 3 rooms

Cora = 3+2 = 5 rooms

Noah = 12-5-3 = 4 rooms

Is the question on the left asking using binary system?

If yes then 100%? Is there more information ? I do not quite understand the question.