So basically what you want to do is put the number on the left into the variable slot on the right, and solve the equation.
I'll do the first chart as an example.
The equation is n + 6.
So taking the first number, 4, you can just put it in as n,
or 4 + 6.
Then the output would be 10.
Then 8 + 6 = 14
12 + 6 = 18
16 + 6 = 22
20 + 6 = 26
24 + 6 = 30
And you can complete the rest of the charts by doing this.
Hope this helped :D