18=x+5x im confused on this problem

18 = 6x                   x+5x is 6x

18/6=6/6               so then you divide 18 and 6 by 6

3=x                     you cancel out the 6 so now it's just x and 18 divided by 6 is 3.

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)