the biggest of 3 consecutive integers is half of the smaller number increased bey two find the numbers

Answer 1

if the three numbers are

x-1, x, x+1 then you know that

x+1 = (x-1)/2 + 2
or
x+1 = (x-1+2)/2

depending on how you parse the words

Answer 2

n-1 , n , n+1

n+1 = .5 (n-1) + 2
I guess, English not clear

n+1 = .5 n - .5 + 2

.5 n = .5

n = 1
so
0 , 1 , 2