110-[30+(40-40:a):5]x3=2
[30+(40-40:a):5]x3=110-2=108
30+(40-40:a):5=108:3=36
(40-40:a):5=36-30=6
40-40:a=6x5=30
40:a=40-30=10
a=40:10
a=4
Sper ca te-am ajutat