Start From The Beginning Mystery Cache

This puzzle contains several equations, but if you start it right, you will find it has nothing to do with complicated math

Posted coordinates are in Givatayim. The place itself at posted coordinates is a clue.

Final location of cache is also in Givatayim, in the beginning of Givatayim

Now for the equations:

1 = 1.5

A = 1.8

B = 2.3

CDE = 5.3

FGH = 5.7

IJK = 7.6

X = C+D+E

Y = I+J+K

Cache is at N 32 4.(F-H)YX , E 34 48.(A+B)XB

Further directions at GZ and photo will be given in geocheck solution page

Cache is a 10ml plastic tube in crack in the wall, behind a piece of brick. In the case hide is empty, you can send me a private message with pic showing you were at GZ, that could count as a find if indeed cache is gone.