Please help me... I'm desperate literally...

The sum of 3 consecutive integers is 36
A) Find the smallest integer using a tape diagram
B) Let n represent the smallest integer. Write an equation that can be used to find the smallest integer.
C) Determine if each value of n below is a solution to the equation in part (b)
i) n = 12.5
ii) n = 12
iii) n = 11